diff --git a/polygerrit-ui/app/BUILD b/polygerrit-ui/app/BUILD
index 79ede8f..b292477 100644
--- a/polygerrit-ui/app/BUILD
+++ b/polygerrit-ui/app/BUILD
@@ -157,6 +157,7 @@
     size = "large",
     srcs = ["wct_test.sh"],
     data = [
+        "test/common-test-setup.html",
         "test/index.html",
         ":pg_code.zip",
         ":test_components.zip",
diff --git a/polygerrit-ui/app/behaviors/base-url-behavior/base-url-behavior_test.html b/polygerrit-ui/app/behaviors/base-url-behavior/base-url-behavior_test.html
index a42d804..99efede 100644
--- a/polygerrit-ui/app/behaviors/base-url-behavior/base-url-behavior_test.html
+++ b/polygerrit-ui/app/behaviors/base-url-behavior/base-url-behavior_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
 <script src="../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../test/common-test-setup.html"/>
 <script>
   /** @type {String} */
   window.CANONICAL_PATH = '/r';
diff --git a/polygerrit-ui/app/behaviors/gr-change-table-behavior/gr-change-table-behavior_test.html b/polygerrit-ui/app/behaviors/gr-change-table-behavior/gr-change-table-behavior_test.html
index 65908f2..19837cc 100644
--- a/polygerrit-ui/app/behaviors/gr-change-table-behavior/gr-change-table-behavior_test.html
+++ b/polygerrit-ui/app/behaviors/gr-change-table-behavior/gr-change-table-behavior_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
 <script src="../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../test/common-test-setup.html"/>
 <link rel="import" href="gr-change-table-behavior.html">
 
 <test-fixture id="basic">
diff --git a/polygerrit-ui/app/behaviors/gr-patch-set-behavior/gr-patch-set-behavior_test.html b/polygerrit-ui/app/behaviors/gr-patch-set-behavior/gr-patch-set-behavior_test.html
index 7ebb17a..0cf7bb4 100644
--- a/polygerrit-ui/app/behaviors/gr-patch-set-behavior/gr-patch-set-behavior_test.html
+++ b/polygerrit-ui/app/behaviors/gr-patch-set-behavior/gr-patch-set-behavior_test.html
@@ -16,9 +16,9 @@
 <!-- Polymer included for the html import polyfill. -->
 <script src="../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
 <script src="../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../test/common-test-setup.html"/>
 <title>gr-patch-set-behavior</title>
 
-<link rel="import" href="../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-patch-set-behavior.html">
 
 <script>
diff --git a/polygerrit-ui/app/behaviors/gr-path-list-behavior/gr-path-list-behavior_test.html b/polygerrit-ui/app/behaviors/gr-path-list-behavior/gr-path-list-behavior_test.html
index 848c744..37772d1 100644
--- a/polygerrit-ui/app/behaviors/gr-path-list-behavior/gr-path-list-behavior_test.html
+++ b/polygerrit-ui/app/behaviors/gr-path-list-behavior/gr-path-list-behavior_test.html
@@ -16,9 +16,9 @@
 <!-- Polymer included for the html import polyfill. -->
 <script src="../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
 <script src="../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../test/common-test-setup.html"/>
 <title>gr-path-list-behavior</title>
 
-<link rel="import" href="../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-path-list-behavior.html">
 
 <script>
diff --git a/polygerrit-ui/app/behaviors/gr-tooltip-behavior/gr-tooltip-behavior_test.html b/polygerrit-ui/app/behaviors/gr-tooltip-behavior/gr-tooltip-behavior_test.html
index 5fc9d54..f442c43 100644
--- a/polygerrit-ui/app/behaviors/gr-tooltip-behavior/gr-tooltip-behavior_test.html
+++ b/polygerrit-ui/app/behaviors/gr-tooltip-behavior/gr-tooltip-behavior_test.html
@@ -19,8 +19,7 @@
 
 <script src="../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
 <script src="../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../test/common-test-setup.html"/>
 <link rel="import" href="gr-tooltip-behavior.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/behaviors/keyboard-shortcut-behavior/keyboard-shortcut-behavior_test.html b/polygerrit-ui/app/behaviors/keyboard-shortcut-behavior/keyboard-shortcut-behavior_test.html
index da04c37..6906ea2 100644
--- a/polygerrit-ui/app/behaviors/keyboard-shortcut-behavior/keyboard-shortcut-behavior_test.html
+++ b/polygerrit-ui/app/behaviors/keyboard-shortcut-behavior/keyboard-shortcut-behavior_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
 <script src="../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../test/common-test-setup.html"/>
 <link rel="import" href="keyboard-shortcut-behavior.html">
 
 <test-fixture id="basic">
diff --git a/polygerrit-ui/app/behaviors/rest-client-behavior/rest-client-behavior_test.html b/polygerrit-ui/app/behaviors/rest-client-behavior/rest-client-behavior_test.html
index 7a8376e..87fe67b 100644
--- a/polygerrit-ui/app/behaviors/rest-client-behavior/rest-client-behavior_test.html
+++ b/polygerrit-ui/app/behaviors/rest-client-behavior/rest-client-behavior_test.html
@@ -20,12 +20,12 @@
 
 <script src="../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
 <script src="../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../test/common-test-setup.html"/>
 <script>
   /** @type {String} */
   window.CANONICAL_PATH = '/r';
 </script>
 
-<link rel="import" href="../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="../base-url-behavior/base-url-behavior.html">
 <link rel="import" href="rest-client-behavior.html">
 
diff --git a/polygerrit-ui/app/elements/admin/gr-admin-project-list/gr-admin-project-list_test.html b/polygerrit-ui/app/elements/admin/gr-admin-project-list/gr-admin-project-list_test.html
index 48c4c9f..ff8571b 100644
--- a/polygerrit-ui/app/elements/admin/gr-admin-project-list/gr-admin-project-list_test.html
+++ b/polygerrit-ui/app/elements/admin/gr-admin-project-list/gr-admin-project-list_test.html
@@ -21,9 +21,7 @@
 <script src="../../../bower_components/page/page.js"></script>
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-admin-project-list.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/admin/gr-admin-project/gr-admin-project.js b/polygerrit-ui/app/elements/admin/gr-admin-project/gr-admin-project.js
index 3557aa9..7654215 100644
--- a/polygerrit-ui/app/elements/admin/gr-admin-project/gr-admin-project.js
+++ b/polygerrit-ui/app/elements/admin/gr-admin-project/gr-admin-project.js
@@ -48,6 +48,7 @@
 
     properties: {
       params: Object,
+      project: String,
 
       _configChanged: {
         type: Boolean,
diff --git a/polygerrit-ui/app/elements/admin/gr-admin-project/gr-admin-project_test.html b/polygerrit-ui/app/elements/admin/gr-admin-project/gr-admin-project_test.html
index beb1e34..e19deb9 100644
--- a/polygerrit-ui/app/elements/admin/gr-admin-project/gr-admin-project_test.html
+++ b/polygerrit-ui/app/elements/admin/gr-admin-project/gr-admin-project_test.html
@@ -20,9 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-admin-project.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item_test.html b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item_test.html
index 6036293..cf55c5c 100644
--- a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item_test.html
+++ b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-change-list-item.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change-list/gr-change-list-view/gr-change-list-view_test.html b/polygerrit-ui/app/elements/change-list/gr-change-list-view/gr-change-list-view_test.html
index a6d798d..e60907b 100644
--- a/polygerrit-ui/app/elements/change-list/gr-change-list-view/gr-change-list-view_test.html
+++ b/polygerrit-ui/app/elements/change-list/gr-change-list-view/gr-change-list-view_test.html
@@ -21,8 +21,7 @@
 <script src="../../../bower_components/page/page.js"></script>
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-change-list-view.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change-list/gr-change-list/gr-change-list_test.html b/polygerrit-ui/app/elements/change-list/gr-change-list/gr-change-list_test.html
index 62b09d6..aba32b03 100644
--- a/polygerrit-ui/app/elements/change-list/gr-change-list/gr-change-list_test.html
+++ b/polygerrit-ui/app/elements/change-list/gr-change-list/gr-change-list_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../bower_components/page/page.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-change-list.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change-list/gr-dashboard-view/gr-dashboard-view_test.html b/polygerrit-ui/app/elements/change-list/gr-dashboard-view/gr-dashboard-view_test.html
index 8a3695b..c67a50b 100644
--- a/polygerrit-ui/app/elements/change-list/gr-dashboard-view/gr-dashboard-view_test.html
+++ b/polygerrit-ui/app/elements/change-list/gr-dashboard-view/gr-dashboard-view_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-dashboard-view.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-account-entry/gr-account-entry_test.html b/polygerrit-ui/app/elements/change/gr-account-entry/gr-account-entry_test.html
index 54fde09..55213c1 100644
--- a/polygerrit-ui/app/elements/change/gr-account-entry/gr-account-entry_test.html
+++ b/polygerrit-ui/app/elements/change/gr-account-entry/gr-account-entry_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-account-entry.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-account-list/gr-account-list_test.html b/polygerrit-ui/app/elements/change/gr-account-list/gr-account-list_test.html
index 5520254..a3a3c64 100644
--- a/polygerrit-ui/app/elements/change/gr-account-list/gr-account-list_test.html
+++ b/polygerrit-ui/app/elements/change/gr-account-list/gr-account-list_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-account-list.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html
index 8aa6bab..4e32116 100644
--- a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html
+++ b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-change-actions.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata-it_test.html b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata-it_test.html
index c162794..b347890 100644
--- a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata-it_test.html
+++ b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata-it_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="../../plugins/gr-plugin-host/gr-plugin-host.html">
 <link rel="import" href="gr-change-metadata.html">
 
diff --git a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata_test.html b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata_test.html
index 5003a68..0d7b037 100644
--- a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata_test.html
+++ b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-change-metadata.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js
index e45e514..358340d 100644
--- a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js
+++ b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js
@@ -396,7 +396,11 @@
     },
 
     _handleReplyOverlayOpen(e) {
-      this.$.replyDialog.focus();
+      // This is needed so that focus is not set on the reply overlay
+      // when the suggestion overaly from gr-autogrow-textarea opens.
+      if (e.target === this.$.replyOverlay) {
+        this.$.replyDialog.focus();
+      }
     },
 
     _handleReplySent(e) {
diff --git a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.html b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.html
index 5847e73..e91f372 100644
--- a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.html
+++ b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../bower_components/page/page.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-change-view.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-comment-list/gr-comment-list_test.html b/polygerrit-ui/app/elements/change/gr-comment-list/gr-comment-list_test.html
index 5275f48..4c8b443 100644
--- a/polygerrit-ui/app/elements/change/gr-comment-list/gr-comment-list_test.html
+++ b/polygerrit-ui/app/elements/change/gr-comment-list/gr-comment-list_test.html
@@ -20,6 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-comment-list.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-commit-info/gr-commit-info_test.html b/polygerrit-ui/app/elements/change/gr-commit-info/gr-commit-info_test.html
index fc45f2a..bd6fdcb 100644
--- a/polygerrit-ui/app/elements/change/gr-commit-info/gr-commit-info_test.html
+++ b/polygerrit-ui/app/elements/change/gr-commit-info/gr-commit-info_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-commit-info.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-cherrypick-dialog/gr-confirm-cherrypick-dialog_test.html b/polygerrit-ui/app/elements/change/gr-confirm-cherrypick-dialog/gr-confirm-cherrypick-dialog_test.html
index 2d6defd..107fb23 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-cherrypick-dialog/gr-confirm-cherrypick-dialog_test.html
+++ b/polygerrit-ui/app/elements/change/gr-confirm-cherrypick-dialog/gr-confirm-cherrypick-dialog_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-confirm-cherrypick-dialog.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog_test.html b/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog_test.html
index bb9651b..0ea7c49 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog_test.html
+++ b/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-confirm-rebase-dialog.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-revert-dialog/gr-confirm-revert-dialog_test.html b/polygerrit-ui/app/elements/change/gr-confirm-revert-dialog/gr-confirm-revert-dialog_test.html
index 78b0dfc..09ba6bb 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-revert-dialog/gr-confirm-revert-dialog_test.html
+++ b/polygerrit-ui/app/elements/change/gr-confirm-revert-dialog/gr-confirm-revert-dialog_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-confirm-revert-dialog.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-download-dialog/gr-download-dialog_test.html b/polygerrit-ui/app/elements/change/gr-download-dialog/gr-download-dialog_test.html
index 63d45c6..0bee5ba 100644
--- a/polygerrit-ui/app/elements/change/gr-download-dialog/gr-download-dialog_test.html
+++ b/polygerrit-ui/app/elements/change/gr-download-dialog/gr-download-dialog_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-download-dialog.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list_test.html b/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list_test.html
index 2558488..f0f5403 100644
--- a/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list_test.html
+++ b/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list_test.html
@@ -20,11 +20,11 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../bower_components/page/page.js"></script>
 <script src="../../../scripts/util.js"></script>
 
 <link rel="import" href="../../shared/gr-rest-api-interface/mock-diff-response_test.html">
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-file-list.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-label-scores/gr-label-scores_test.html b/polygerrit-ui/app/elements/change/gr-label-scores/gr-label-scores_test.html
index 8d91e75..3c46252 100644
--- a/polygerrit-ui/app/elements/change/gr-label-scores/gr-label-scores_test.html
+++ b/polygerrit-ui/app/elements/change/gr-label-scores/gr-label-scores_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-label-scores.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-message/gr-message_test.html b/polygerrit-ui/app/elements/change/gr-message/gr-message_test.html
index 5f8b312..8638edd 100644
--- a/polygerrit-ui/app/elements/change/gr-message/gr-message_test.html
+++ b/polygerrit-ui/app/elements/change/gr-message/gr-message_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-message.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-messages-list/gr-messages-list_test.html b/polygerrit-ui/app/elements/change/gr-messages-list/gr-messages-list_test.html
index f6f2764..c47d63f 100644
--- a/polygerrit-ui/app/elements/change/gr-messages-list/gr-messages-list_test.html
+++ b/polygerrit-ui/app/elements/change/gr-messages-list/gr-messages-list_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-messages-list.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list_test.html b/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list_test.html
index 4a25405..6336433 100644
--- a/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list_test.html
+++ b/polygerrit-ui/app/elements/change/gr-related-changes-list/gr-related-changes-list_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-related-changes-list.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog-it_test.html b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog-it_test.html
index b4a6171..12c08c6 100644
--- a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog-it_test.html
+++ b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog-it_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-reply-dialog.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.html b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.html
index c77689d..eadf667 100644
--- a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.html
+++ b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.html
@@ -22,6 +22,7 @@
 <link rel="import" href="../../../bower_components/iron-autogrow-textarea/iron-autogrow-textarea.html">
 <link rel="import" href="../../plugins/gr-endpoint-decorator/gr-endpoint-decorator.html">
 <link rel="import" href="../../shared/gr-account-chip/gr-account-chip.html">
+<link rel="import" href="../../shared/gr-textarea/gr-textarea.html">
 <link rel="import" href="../../shared/gr-button/gr-button.html">
 <link rel="import" href="../../shared/gr-formatted-text/gr-formatted-text.html">
 <link rel="import" href="../../shared/gr-js-api-interface/gr-js-api-interface.html">
@@ -92,28 +93,15 @@
         font-style: italic;
       }
       .textareaContainer {
-        display: flex;
-        flex: 1;
         min-height: 6em;
         position: relative;
       }
-      .textareaContainer > * {
-        flex: 1;
-      }
-      iron-autogrow-textarea {
-        padding: 0;
-        font-family: var(--monospace-font-family);
-      }
       .previewContainer gr-formatted-text {
         background: #f6f6f6;
         max-height: 20vh;
         overflow-y: scroll;
         padding: 1em;
       }
-      .message {
-        border: none;
-        width: 100%;
-      }
       .draftsContainer {
         flex: 1;
         overflow-y: auto;
@@ -208,17 +196,20 @@
       </section>
       <section class="textareaContainer">
         <gr-endpoint-decorator name="reply-text">
-          <iron-autogrow-textarea
+          <gr-textarea
               id="textarea"
               class="message"
               autocomplete="on"
               placeholder=[[_messagePlaceholder]]
+              fixed-position-dropdown
+              hide-border="true"
+              monospace="true"
               disabled="{{disabled}}"
               rows="4"
               max-rows="15"
-              bind-value="{{draft}}"
+              text="{{draft}}"
               on-bind-value-changed="_handleHeightChanged">
-          </iron-autogrow-textarea>
+          </gr-textarea>
         </gr-endpoint-decorator>
       </section>
       <section class="previewContainer">
diff --git a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.js b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.js
index 7f0e7d1..276e729 100644
--- a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.js
+++ b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog.js
@@ -387,7 +387,8 @@
       }
       if (section === FocusTarget.BODY) {
         const textarea = this.$.textarea;
-        textarea.async(textarea.textarea.focus.bind(textarea.textarea));
+        textarea.async(textarea.getNativeTextarea()
+            .focus.bind(textarea.getNativeTextarea()));
       } else if (section === FocusTarget.REVIEWERS) {
         const reviewerEntry = this.$.reviewers.focusStart;
         reviewerEntry.async(reviewerEntry.focus);
@@ -561,6 +562,7 @@
 
     cancel() {
       this.fire('cancel', null, {bubbles: false});
+      this.$.textarea.closeDropdown();
       this._purgeReviewersPendingRemove(true);
       this._rebuildReviewerArrays(this.change.reviewers, this._owner,
           this.serverConfig);
diff --git a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog_test.html b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog_test.html
index fd21b5f..2b1b42c 100644
--- a/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog_test.html
+++ b/polygerrit-ui/app/elements/change/gr-reply-dialog/gr-reply-dialog_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-reply-dialog.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/change/gr-reviewer-list/gr-reviewer-list_test.html b/polygerrit-ui/app/elements/change/gr-reviewer-list/gr-reviewer-list_test.html
index c60916a..4e0541e6 100644
--- a/polygerrit-ui/app/elements/change/gr-reviewer-list/gr-reviewer-list_test.html
+++ b/polygerrit-ui/app/elements/change/gr-reviewer-list/gr-reviewer-list_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-reviewer-list.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/core/gr-account-dropdown/gr-account-dropdown_test.html b/polygerrit-ui/app/elements/core/gr-account-dropdown/gr-account-dropdown_test.html
index 46f3ca3..6bda66f 100644
--- a/polygerrit-ui/app/elements/core/gr-account-dropdown/gr-account-dropdown_test.html
+++ b/polygerrit-ui/app/elements/core/gr-account-dropdown/gr-account-dropdown_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-account-dropdown.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/core/gr-error-manager/gr-error-manager_test.html b/polygerrit-ui/app/elements/core/gr-error-manager/gr-error-manager_test.html
index ba10f09..5d1c461 100644
--- a/polygerrit-ui/app/elements/core/gr-error-manager/gr-error-manager_test.html
+++ b/polygerrit-ui/app/elements/core/gr-error-manager/gr-error-manager_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-error-manager.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header.js b/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header.js
index c2273d1..390b028 100644
--- a/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header.js
+++ b/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header.js
@@ -27,6 +27,7 @@
     {
       url: '/admin/projects',
       name: 'Projects',
+      viewableToAll: true,
     },
     {
       url: '/admin/create-project',
@@ -178,11 +179,8 @@
           links: userLinks,
         });
       }
-      if (adminLinks && adminLinks.length > 0) {
-        links.push({
-          title: 'Admin',
-          links: adminLinks,
-        });
+      if (!adminLinks || !adminLinks.length) {
+        adminLinks = ADMIN_LINKS.filter(link => link.viewableToAll);
       }
       const docLinks = this._getDocLinks(docBaseUrl, DOCUMENTATION_LINKS);
       if (docLinks.length) {
@@ -191,6 +189,10 @@
           links: docLinks,
         });
       }
+      links.push({
+        title: 'More',
+        links: adminLinks,
+      });
       return links;
     },
 
@@ -212,7 +214,7 @@
     },
 
     _loadAccount() {
-      this.$.restAPI.getAccount().then(account => {
+      return this.$.restAPI.getAccount().then(account => {
         this._account = account;
         this.$.accountContainer.classList.toggle('loggedIn', account != null);
         this.$.accountContainer.classList.toggle('loggedOut', account == null);
diff --git a/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header_test.html b/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header_test.html
index f407ac5..08cf499 100644
--- a/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header_test.html
+++ b/polygerrit-ui/app/elements/core/gr-main-header/gr-main-header_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-main-header.html">
 
 <script>void(0);</script>
@@ -118,16 +117,25 @@
         url: '/admin/groups',
         name: 'Groups',
       }];
+      const defaultAdminLink = {
+        title: 'More',
+        links: [{
+          url: '/admin/projects',
+          name: 'Projects',
+          viewableToAll: true,
+        }],
+      };
 
-      assert.deepEqual(
-          element._computeLinks(defaultLinks, [], []), defaultLinks);
+      // When no admin links are passed, it should use the default.
+      assert.deepEqual(element._computeLinks(defaultLinks, [], []),
+          defaultLinks.concat(defaultAdminLink));
       assert.deepEqual(
           element._computeLinks(defaultLinks, userLinks, adminLinks),
           defaultLinks.concat({
             title: 'Your',
             links: userLinks,
           }, {
-            title: 'Admin',
+            title: 'More',
             links: adminLinks,
           }));
     });
diff --git a/polygerrit-ui/app/elements/core/gr-reporting/gr-reporting_test.html b/polygerrit-ui/app/elements/core/gr-reporting/gr-reporting_test.html
index bda03b1..08f72b7 100644
--- a/polygerrit-ui/app/elements/core/gr-reporting/gr-reporting_test.html
+++ b/polygerrit-ui/app/elements/core/gr-reporting/gr-reporting_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-reporting.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/core/gr-search-bar/gr-search-bar_test.html b/polygerrit-ui/app/elements/core/gr-search-bar/gr-search-bar_test.html
index 54ca399..059ea7d 100644
--- a/polygerrit-ui/app/elements/core/gr-search-bar/gr-search-bar_test.html
+++ b/polygerrit-ui/app/elements/core/gr-search-bar/gr-search-bar_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../bower_components/page/page.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-search-bar.html">
 <script src="../../../scripts/util.js"></script>
 
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
index e20aecc..b98959b 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
@@ -128,9 +128,8 @@
           this._showTabs = !!prefs.show_tabs;
           this._showTrailingWhitespace = !!prefs.show_whitespace_errors;
 
-          // Stop the processor (if it's running).
-          this.$.processor.cancel();
-          this.$.syntaxLayer.cancel();
+          // Stop the processor and syntax layer (if they're running).
+          this.cancel();
 
           this._builder = this._getDiffBuilder(this.diff, comments, prefs);
 
@@ -245,6 +244,11 @@
           this.async(() => this.fire('render-content'), 1);
         },
 
+        cancel() {
+          this.$.processor.cancel();
+          this.$.syntaxLayer.cancel();
+        },
+
         _getDiffBuilder(diff, comments, prefs) {
           if (this.isImageDiff) {
             return new GrDiffBuilderImage(diff, comments, prefs,
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
index 6c4a9d9..ee66b42 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
@@ -20,6 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 <script src="../gr-diff/gr-diff-line.js"></script>
 <script src="../gr-diff/gr-diff-group.js"></script>
@@ -855,6 +856,14 @@
         };
         element.render({left: [], right: []}, prefs);
       });
+
+      test('cancel', () => {
+        const processorCancelStub = sandbox.stub(element.$.processor, 'cancel');
+        const syntaxCancelStub = sandbox.stub(element.$.syntaxLayer, 'cancel');
+        element.cancel();
+        assert.isTrue(processorCancelStub.called);
+        assert.isTrue(syntaxCancelStub.called);
+      });
     });
 
     suite('mock-diff', () => {
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group_test.html b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group_test.html
index 056b74f..c2738460 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-diff-comment-thread-group.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread_test.html b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread_test.html
index 85beca6..5a65f58 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-diff-comment-thread.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.html b/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.html
index 110f09d..695e2b3 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.html
@@ -40,13 +40,13 @@
           padding: 2px;
         };
       }
-      :host[disabled] {
+      :host([disabled]) {
         pointer-events: none;
       }
-      :host[disabled] .container {
+      :host([disabled]) .container {
         opacity: .5;
       }
-      :host[is-robot-comment] {
+      :host([is-robot-comment]) {
         background-color: #cfe8fc;
       }
       .header {
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment_test.html b/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment_test.html
index 4a1df77..c4d1273 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment_test.html
@@ -20,10 +20,10 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../bower_components/page/page.js"></script>
 <script src="../../../scripts/util.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-diff-comment.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-cursor/gr-diff-cursor_test.html b/polygerrit-ui/app/elements/diff/gr-diff-cursor/gr-diff-cursor_test.html
index 645093e..8be6e92 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-cursor/gr-diff-cursor_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-cursor/gr-diff-cursor_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="../gr-diff/gr-diff.html">
 <link rel="import" href="./gr-diff-cursor.html">
 <link rel="import" href="../../shared/gr-rest-api-interface/mock-diff-response_test.html">
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-annotation_test.html b/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-annotation_test.html
index b25b4fb..b237685 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-annotation_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-annotation_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="gr-annotation.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 
 <script>void(0);</script>
 
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-diff-highlight_test.html b/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-diff-highlight_test.html
index c1254bd..f8e2a77 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-diff-highlight_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-diff-highlight_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-diff-highlight.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-preferences/gr-diff-preferences.html b/polygerrit-ui/app/elements/diff/gr-diff-preferences/gr-diff-preferences.html
index b069cb4..99a7054 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-preferences/gr-diff-preferences.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-preferences/gr-diff-preferences.html
@@ -28,7 +28,7 @@
       :host {
         display: block;
       }
-      :host[disabled] {
+      :host([disabled]) {
         opacity: .5;
         pointer-events: none;
       }
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-preferences/gr-diff-preferences_test.html b/polygerrit-ui/app/elements/diff/gr-diff-preferences/gr-diff-preferences_test.html
index d201edf..f06cd3a 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-preferences/gr-diff-preferences_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-preferences/gr-diff-preferences_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-diff-preferences.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor_test.html b/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor_test.html
index 4785351..beb8ed2 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-diff-processor.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-selection/gr-diff-selection_test.html b/polygerrit-ui/app/elements/diff/gr-diff-selection/gr-diff-selection_test.html
index 39555b4..2a35a39 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-selection/gr-diff-selection_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-selection/gr-diff-selection_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-diff-selection.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view_test.html b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view_test.html
index 625af35..13d7140 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view_test.html
@@ -20,10 +20,10 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../bower_components/page/page.js"></script>
 <script src="../../../scripts/util.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-diff-view.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff-group_test.html b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff-group_test.html
index 90e5d06..32405cf 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff-group_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff-group_test.html
@@ -19,6 +19,7 @@
 <title>gr-diff-group</title>
 
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="gr-diff-line.js"></script>
 <script src="gr-diff-group.js"></script>
 
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html
index 687c462..d101fea 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html
@@ -35,10 +35,10 @@
         --light-add-highlight-color: #efe;
         --dark-add-highlight-color: rgba(0, 255, 0, 0.15);
       }
-      :host.no-left .sideBySide ::content .left,
-      :host.no-left .sideBySide ::content .left + td,
-      :host.no-left .sideBySide ::content .right:not([data-value]),
-      :host.no-left .sideBySide ::content .right:not([data-value]) + td {
+      :host(.no-left) .sideBySide ::content .left,
+      :host(.no-left) .sideBySide ::content .left + td,
+      :host(.no-left) .sideBySide ::content .right:not([data-value]),
+      :host(.no-left) .sideBySide ::content .right:not([data-value]) + td {
         display: none;
       }
       .diffContainer {
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
index fbff941..386ac08 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
@@ -123,6 +123,7 @@
     },
 
     reload() {
+      this.$.diffBuilder.cancel();
       this._clearDiffContent();
 
       const promises = [];
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_test.html b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_test.html
index bd7adfe..1c0f05e 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="../../shared/gr-rest-api-interface/mock-diff-response_test.html">
 <link rel="import" href="gr-diff.html">
 
@@ -47,6 +47,19 @@
       sandbox.restore();
     });
 
+    test('reload cancels before network resolves', () => {
+      element = fixture('basic');
+      const cancelStub = sandbox.stub(element.$.diffBuilder, 'cancel');
+
+      // Stub the network calls into requests that never resolve.
+      sandbox.stub(element, '_getDiff', () => new Promise(() => {}));
+      sandbox.stub(element, '_getDiffCommentsAndDrafts',
+          () => new Promise(() => {}));
+
+      element.reload();
+      assert.isTrue(cancelStub.called);
+    });
+
     suite('not logged in', () => {
       setup(() => {
         stub('gr-rest-api-interface', {
diff --git a/polygerrit-ui/app/elements/diff/gr-patch-range-select/gr-patch-range-select_test.html b/polygerrit-ui/app/elements/diff/gr-patch-range-select/gr-patch-range-select_test.html
index 0195eac..162936c 100644
--- a/polygerrit-ui/app/elements/diff/gr-patch-range-select/gr-patch-range-select_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-patch-range-select/gr-patch-range-select_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../bower_components/page/page.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-patch-range-select.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-ranged-comment-layer/gr-ranged-comment-layer_test.html b/polygerrit-ui/app/elements/diff/gr-ranged-comment-layer/gr-ranged-comment-layer_test.html
index 1156ba0..afdf630 100644
--- a/polygerrit-ui/app/elements/diff/gr-ranged-comment-layer/gr-ranged-comment-layer_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-ranged-comment-layer/gr-ranged-comment-layer_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../gr-diff/gr-diff-line.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-ranged-comment-layer.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-selection-action-box/gr-selection-action-box_test.html b/polygerrit-ui/app/elements/diff/gr-selection-action-box/gr-selection-action-box_test.html
index 2beb6bc..cfa8c5f 100644
--- a/polygerrit-ui/app/elements/diff/gr-selection-action-box/gr-selection-action-box_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-selection-action-box/gr-selection-action-box_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-selection-action-box.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer_test.html b/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer_test.html
index 346a74a..98a6f8e 100644
--- a/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="../../shared/gr-rest-api-interface/mock-diff-response_test.html">
 <link rel="import" href="gr-syntax-layer.html">
 
diff --git a/polygerrit-ui/app/elements/diff/gr-syntax-lib-loader/gr-syntax-lib-loader_test.html b/polygerrit-ui/app/elements/diff/gr-syntax-lib-loader/gr-syntax-lib-loader_test.html
index 0a916d0..b46910a 100644
--- a/polygerrit-ui/app/elements/diff/gr-syntax-lib-loader/gr-syntax-lib-loader_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-syntax-lib-loader/gr-syntax-lib-loader_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-syntax-lib-loader.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/gr-app-it_test.html b/polygerrit-ui/app/elements/gr-app-it_test.html
index 67c5139..7b134c1 100644
--- a/polygerrit-ui/app/elements/gr-app-it_test.html
+++ b/polygerrit-ui/app/elements/gr-app-it_test.html
@@ -20,8 +20,7 @@
 
 <script src="../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../test/common-test-setup.html"/>
 <link rel="import" href="gr-app.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/gr-app_test.html b/polygerrit-ui/app/elements/gr-app_test.html
index e25869b..905c5c4 100644
--- a/polygerrit-ui/app/elements/gr-app_test.html
+++ b/polygerrit-ui/app/elements/gr-app_test.html
@@ -20,7 +20,7 @@
 
 <script src="../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../test/common-test-setup.html"/>
 <link rel="import" href="gr-app.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/plugins/gr-endpoint-decorator/gr-endpoint-decorator_test.html b/polygerrit-ui/app/elements/plugins/gr-endpoint-decorator/gr-endpoint-decorator_test.html
index a64e1e5..52ece65 100644
--- a/polygerrit-ui/app/elements/plugins/gr-endpoint-decorator/gr-endpoint-decorator_test.html
+++ b/polygerrit-ui/app/elements/plugins/gr-endpoint-decorator/gr-endpoint-decorator_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-endpoint-decorator.html">
 
 <test-fixture id="basic">
diff --git a/polygerrit-ui/app/elements/plugins/gr-external-style/gr-external-style_test.html b/polygerrit-ui/app/elements/plugins/gr-external-style/gr-external-style_test.html
index d1b9e70..bc24c2b 100644
--- a/polygerrit-ui/app/elements/plugins/gr-external-style/gr-external-style_test.html
+++ b/polygerrit-ui/app/elements/plugins/gr-external-style/gr-external-style_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-external-style.html">
 
 <test-fixture id="basic">
diff --git a/polygerrit-ui/app/elements/plugins/gr-plugin-host/gr-plugin-host_test.html b/polygerrit-ui/app/elements/plugins/gr-plugin-host/gr-plugin-host_test.html
index 17f4875..1e81092 100644
--- a/polygerrit-ui/app/elements/plugins/gr-plugin-host/gr-plugin-host_test.html
+++ b/polygerrit-ui/app/elements/plugins/gr-plugin-host/gr-plugin-host_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-plugin-host.html">
 
 <test-fixture id="basic">
diff --git a/polygerrit-ui/app/elements/settings/gr-account-info/gr-account-info.html b/polygerrit-ui/app/elements/settings/gr-account-info/gr-account-info.html
index dfbf3038..494b9e8 100644
--- a/polygerrit-ui/app/elements/settings/gr-account-info/gr-account-info.html
+++ b/polygerrit-ui/app/elements/settings/gr-account-info/gr-account-info.html
@@ -20,9 +20,12 @@
 <link rel="import" href="../../shared/gr-rest-api-interface/gr-rest-api-interface.html">
 
 <link rel="import" href="../../../styles/gr-form-styles.html">
+<link rel="import" href="../../../styles/shared-styles.html">
+
 
 <dom-module id="gr-account-info">
   <template>
+    <style include="shared-styles"></style>
     <style include="gr-form-styles"></style>
     <div class="gr-form-styles">
       <section>
diff --git a/polygerrit-ui/app/elements/settings/gr-account-info/gr-account-info_test.html b/polygerrit-ui/app/elements/settings/gr-account-info/gr-account-info_test.html
index d354f07..84fbc09 100644
--- a/polygerrit-ui/app/elements/settings/gr-account-info/gr-account-info_test.html
+++ b/polygerrit-ui/app/elements/settings/gr-account-info/gr-account-info_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-account-info.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/settings/gr-change-table-editor/gr-change-table-editor_test.html b/polygerrit-ui/app/elements/settings/gr-change-table-editor/gr-change-table-editor_test.html
index 15edb94..61093b9 100644
--- a/polygerrit-ui/app/elements/settings/gr-change-table-editor/gr-change-table-editor_test.html
+++ b/polygerrit-ui/app/elements/settings/gr-change-table-editor/gr-change-table-editor_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-change-table-editor.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/settings/gr-email-editor/gr-email-editor_test.html b/polygerrit-ui/app/elements/settings/gr-email-editor/gr-email-editor_test.html
index 608179e..fdbafdb 100644
--- a/polygerrit-ui/app/elements/settings/gr-email-editor/gr-email-editor_test.html
+++ b/polygerrit-ui/app/elements/settings/gr-email-editor/gr-email-editor_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-email-editor.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/settings/gr-group-list/gr-group-list_test.html b/polygerrit-ui/app/elements/settings/gr-group-list/gr-group-list_test.html
index c0cecdf..3c4eff2 100644
--- a/polygerrit-ui/app/elements/settings/gr-group-list/gr-group-list_test.html
+++ b/polygerrit-ui/app/elements/settings/gr-group-list/gr-group-list_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-group-list.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/settings/gr-http-password/gr-http-password_test.html b/polygerrit-ui/app/elements/settings/gr-http-password/gr-http-password_test.html
index acc9f60..bbe1555 100644
--- a/polygerrit-ui/app/elements/settings/gr-http-password/gr-http-password_test.html
+++ b/polygerrit-ui/app/elements/settings/gr-http-password/gr-http-password_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-http-password.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/settings/gr-menu-editor/gr-menu-editor_test.html b/polygerrit-ui/app/elements/settings/gr-menu-editor/gr-menu-editor_test.html
index f9e905d..7e12483 100644
--- a/polygerrit-ui/app/elements/settings/gr-menu-editor/gr-menu-editor_test.html
+++ b/polygerrit-ui/app/elements/settings/gr-menu-editor/gr-menu-editor_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-menu-editor.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/settings/gr-registration-dialog/gr-registration-dialog_test.html b/polygerrit-ui/app/elements/settings/gr-registration-dialog/gr-registration-dialog_test.html
index 1f8a34a..b3ea3fa 100644
--- a/polygerrit-ui/app/elements/settings/gr-registration-dialog/gr-registration-dialog_test.html
+++ b/polygerrit-ui/app/elements/settings/gr-registration-dialog/gr-registration-dialog_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-registration-dialog.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view_test.html b/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view_test.html
index 2d6c16d..517f208 100644
--- a/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view_test.html
+++ b/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-settings-view.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/settings/gr-ssh-editor/gr-ssh-editor_test.html b/polygerrit-ui/app/elements/settings/gr-ssh-editor/gr-ssh-editor_test.html
index 09da19f..4273f7a 100644
--- a/polygerrit-ui/app/elements/settings/gr-ssh-editor/gr-ssh-editor_test.html
+++ b/polygerrit-ui/app/elements/settings/gr-ssh-editor/gr-ssh-editor_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-ssh-editor.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/settings/gr-watched-projects-editor/gr-watched-projects-editor_test.html b/polygerrit-ui/app/elements/settings/gr-watched-projects-editor/gr-watched-projects-editor_test.html
index 1e6ed7a..a93beb1 100644
--- a/polygerrit-ui/app/elements/settings/gr-watched-projects-editor/gr-watched-projects-editor_test.html
+++ b/polygerrit-ui/app/elements/settings/gr-watched-projects-editor/gr-watched-projects-editor_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-watched-projects-editor.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-account-label/gr-account-label_test.html b/polygerrit-ui/app/elements/shared/gr-account-label/gr-account-label_test.html
index 2c43879..3b1e1de 100644
--- a/polygerrit-ui/app/elements/shared/gr-account-label/gr-account-label_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-account-label/gr-account-label_test.html
@@ -20,6 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
 <link rel="import" href="gr-account-label.html">
diff --git a/polygerrit-ui/app/elements/shared/gr-account-link/gr-account-link_test.html b/polygerrit-ui/app/elements/shared/gr-account-link/gr-account-link_test.html
index 29d1580..7e2e97b 100644
--- a/polygerrit-ui/app/elements/shared/gr-account-link/gr-account-link_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-account-link/gr-account-link_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-account-link.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-alert/gr-alert_test.html b/polygerrit-ui/app/elements/shared/gr-alert/gr-alert_test.html
index 6bbfcfb..b8dcb8d 100644
--- a/polygerrit-ui/app/elements/shared/gr-alert/gr-alert_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-alert/gr-alert_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-alert.html">
 
 <script>
diff --git a/polygerrit-ui/app/elements/shared/gr-autocomplete-dropdown/gr-autocomplete-dropdown_test.html b/polygerrit-ui/app/elements/shared/gr-autocomplete-dropdown/gr-autocomplete-dropdown_test.html
index c071f0c..db9440c 100644
--- a/polygerrit-ui/app/elements/shared/gr-autocomplete-dropdown/gr-autocomplete-dropdown_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-autocomplete-dropdown/gr-autocomplete-dropdown_test.html
@@ -20,9 +20,8 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-autocomplete-dropdown.html">
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 
 <script>void(0);</script>
 
diff --git a/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete_test.html b/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete_test.html
index eb8e305..fe21053 100644
--- a/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-autocomplete.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-avatar/gr-avatar_test.html b/polygerrit-ui/app/elements/shared/gr-avatar/gr-avatar_test.html
index 0a1ac67..4a51142 100644
--- a/polygerrit-ui/app/elements/shared/gr-avatar/gr-avatar_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-avatar/gr-avatar_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-avatar.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-button/gr-button_test.html b/polygerrit-ui/app/elements/shared/gr-button/gr-button_test.html
index 536b777..de8b5b1 100644
--- a/polygerrit-ui/app/elements/shared/gr-button/gr-button_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-button/gr-button_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-button.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-change-star/gr-change-star_test.html b/polygerrit-ui/app/elements/shared/gr-change-star/gr-change-star_test.html
index 6286efe..6c15a46 100644
--- a/polygerrit-ui/app/elements/shared/gr-change-star/gr-change-star_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-change-star/gr-change-star_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-change-star.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-confirm-dialog/gr-confirm-dialog_test.html b/polygerrit-ui/app/elements/shared/gr-confirm-dialog/gr-confirm-dialog_test.html
index cb5d688..309e15c 100644
--- a/polygerrit-ui/app/elements/shared/gr-confirm-dialog/gr-confirm-dialog_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-confirm-dialog/gr-confirm-dialog_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-confirm-dialog.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-cursor-manager/gr-cursor-manager_test.html b/polygerrit-ui/app/elements/shared/gr-cursor-manager/gr-cursor-manager_test.html
index 7ab0088..a8102b5 100644
--- a/polygerrit-ui/app/elements/shared/gr-cursor-manager/gr-cursor-manager_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-cursor-manager/gr-cursor-manager_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-cursor-manager.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-date-formatter/gr-date-formatter_test.html b/polygerrit-ui/app/elements/shared/gr-date-formatter/gr-date-formatter_test.html
index 8a3ea3a..2c15ef6 100644
--- a/polygerrit-ui/app/elements/shared/gr-date-formatter/gr-date-formatter_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-date-formatter/gr-date-formatter_test.html
@@ -20,6 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
 <link rel="import" href="gr-date-formatter.html">
diff --git a/polygerrit-ui/app/elements/shared/gr-dropdown/gr-dropdown.html b/polygerrit-ui/app/elements/shared/gr-dropdown/gr-dropdown.html
index 390778d..eb5c3ed 100644
--- a/polygerrit-ui/app/elements/shared/gr-dropdown/gr-dropdown.html
+++ b/polygerrit-ui/app/elements/shared/gr-dropdown/gr-dropdown.html
@@ -41,7 +41,7 @@
         font: inherit;
         padding: .3em 0;
       }
-      :host[down-arrow] .dropdown-trigger {
+      :host([down-arrow]) .dropdown-trigger {
         padding-right: 1.4em;
       }
       gr-avatar {
@@ -85,7 +85,7 @@
         font-weight: bold;
       }
       :host:not([down-arrow]) .downArrow { display: none; }
-      :host[down-arrow] .downArrow {
+      :host([down-arrow]) .downArrow {
         border-left: .36em solid transparent;
         border-right: .36em solid transparent;
         border-top: .36em solid #ccc;
diff --git a/polygerrit-ui/app/elements/shared/gr-dropdown/gr-dropdown_test.html b/polygerrit-ui/app/elements/shared/gr-dropdown/gr-dropdown_test.html
index 1815cca..c951cd4 100644
--- a/polygerrit-ui/app/elements/shared/gr-dropdown/gr-dropdown_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-dropdown/gr-dropdown_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-dropdown.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-editable-content/gr-editable-content_test.html b/polygerrit-ui/app/elements/shared/gr-editable-content/gr-editable-content_test.html
index df98d5a..d8e5b21 100644
--- a/polygerrit-ui/app/elements/shared/gr-editable-content/gr-editable-content_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-editable-content/gr-editable-content_test.html
@@ -20,6 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../bower_components/iron-test-helpers/mock-interactions.js"></script>
 
 <link rel="import" href="gr-editable-content.html">
diff --git a/polygerrit-ui/app/elements/shared/gr-editable-label/gr-editable-label_test.html b/polygerrit-ui/app/elements/shared/gr-editable-label/gr-editable-label_test.html
index ffd1f81..9079f6f 100644
--- a/polygerrit-ui/app/elements/shared/gr-editable-label/gr-editable-label_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-editable-label/gr-editable-label_test.html
@@ -20,6 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../bower_components/iron-test-helpers/mock-interactions.js"></script>
 
 <link rel="import" href="gr-editable-label.html">
diff --git a/polygerrit-ui/app/elements/shared/gr-fixed-panel/gr-fixed-panel_test.html b/polygerrit-ui/app/elements/shared/gr-fixed-panel/gr-fixed-panel_test.html
index ee05f7d..97c92b7 100644
--- a/polygerrit-ui/app/elements/shared/gr-fixed-panel/gr-fixed-panel_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-fixed-panel/gr-fixed-panel_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-fixed-panel.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text.html b/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text.html
index 42ec18e..28a9e0e 100644
--- a/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text.html
+++ b/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text.html
@@ -35,10 +35,10 @@
       blockquote {
         max-width: var(--gr-formatted-text-prose-max-width, none);
       }
-      :host.noTrailingMargin p:last-child,
-      :host.noTrailingMargin ul:last-child,
-      :host.noTrailingMargin blockquote:last-child,
-      :host.noTrailingMargin gr-linked-text.pre:last-child {
+      :host(.noTrailingMargin) p:last-child,
+      :host(.noTrailingMargin) ul:last-child,
+      :host(.noTrailingMargin) blockquote:last-child,
+      :host(.noTrailingMargin) gr-linked-text.pre:last-child {
         margin: 0;
       }
       blockquote {
@@ -46,6 +46,7 @@
         padding: 0 .7em;
       }
       li {
+        list-style-type: disc;
         margin-left: 1.4em;
       }
       gr-linked-text.pre {
diff --git a/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text_test.html b/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text_test.html
index 0192ea9..fe5b92f 100644
--- a/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-formatted-text.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api_test.html b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api_test.html
index 24fee39..53d7345 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <!--
 This must refer to the element this interface is wrapping around. Otherwise
 breaking changes to gr-change-actions won’t be noticed.
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-reply-js-api_test.html b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-reply-js-api_test.html
index 3080df1..2f67035 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-reply-js-api_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-reply-js-api_test.html
@@ -20,8 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <!--
 This must refer to the element this interface is wrapping around. Otherwise
 breaking changes to gr-reply-dialog won’t be noticed.
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html
index 40810b1..761fe2a 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html
@@ -20,6 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-js-api-interface.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-linked-chip/gr-linked-chip_test.html b/polygerrit-ui/app/elements/shared/gr-linked-chip/gr-linked-chip_test.html
index 3182653..d707d10 100644
--- a/polygerrit-ui/app/elements/shared/gr-linked-chip/gr-linked-chip_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-linked-chip/gr-linked-chip_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../bower_components/iron-test-helpers/mock-interactions.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-linked-chip.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-linked-text/gr-linked-text_test.html b/polygerrit-ui/app/elements/shared/gr-linked-text/gr-linked-text_test.html
index 807278d..0042049 100644
--- a/polygerrit-ui/app/elements/shared/gr-linked-text/gr-linked-text_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-linked-text/gr-linked-text_test.html
@@ -20,6 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
 <link rel="import" href="gr-linked-text.html">
diff --git a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface_test.html b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface_test.html
index 1257529..1450a5a 100644
--- a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface_test.html
@@ -20,9 +20,9 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 <link rel="import" href="gr-rest-api-interface.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-reviewer-updates-parser_test.html b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-reviewer-updates-parser_test.html
index f27e068..ca1dc9f 100644
--- a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-reviewer-updates-parser_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-reviewer-updates-parser_test.html
@@ -20,9 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <script src="../../../scripts/util.js"></script>
 <script src="gr-reviewer-updates-parser.js"></script>
 
diff --git a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/mock-diff-response_test.html b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/mock-diff-response_test.html
index 0385f64..add07ea 100644
--- a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/mock-diff-response_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/mock-diff-response_test.html
@@ -15,7 +15,7 @@
 -->
 
 <link rel="import" href="../../../bower_components/polymer/polymer.html">
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <dom-module id="mock-diff-response">
   <template></template>
   <script>
diff --git a/polygerrit-ui/app/elements/shared/gr-select/gr-select_test.html b/polygerrit-ui/app/elements/shared/gr-select/gr-select_test.html
index 83ae5af..fa8a54c 100644
--- a/polygerrit-ui/app/elements/shared/gr-select/gr-select_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-select/gr-select_test.html
@@ -20,7 +20,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-select.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-storage/gr-storage_test.html b/polygerrit-ui/app/elements/shared/gr-storage/gr-storage_test.html
index 4171939..ce8ec20 100644
--- a/polygerrit-ui/app/elements/shared/gr-storage/gr-storage_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-storage/gr-storage_test.html
@@ -19,7 +19,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-storage.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea.js b/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea.js
index 9158a57..add4b6f 100644
--- a/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea.js
+++ b/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea.js
@@ -64,6 +64,7 @@
       text: {
         type: String,
         notify: true,
+        observer: '_handleTextChanged',
       },
       backgroundColor: {
         type: String,
@@ -316,5 +317,10 @@
       this._colonIndex = null;
       this.$.textarea.textarea.focus();
     },
+
+    _handleTextChanged(text) {
+      this.dispatchEvent(
+          new CustomEvent('value-changed', {detail: {value: text}}));
+    },
   });
 })();
diff --git a/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea_test.html b/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea_test.html
index 1c5dea3..637fbbfc 100644
--- a/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea_test.html
@@ -20,9 +20,8 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-textarea.html">
-<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
 
 <script>void(0);</script>
 
diff --git a/polygerrit-ui/app/elements/shared/gr-tooltip-content/gr-tooltip-content_test.html b/polygerrit-ui/app/elements/shared/gr-tooltip-content/gr-tooltip-content_test.html
index 35c9a61..2fa02a3 100644
--- a/polygerrit-ui/app/elements/shared/gr-tooltip-content/gr-tooltip-content_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-tooltip-content/gr-tooltip-content_test.html
@@ -19,7 +19,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-tooltip-content.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip.html b/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip.html
index 8d57be7..e79fb19 100644
--- a/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip.html
+++ b/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip.html
@@ -28,11 +28,13 @@
         box-shadow: 0 1px 3px rgba(0, 0, 0, .3);
         color: #fff;
         font-size: .75rem;
-        padding: .5em .85em;
         position: absolute;
         z-index: 1000;
         max-width: var(--tooltip-max-width);
       }
+      :host .tooltip {
+        padding: .5em .85em;
+      }
       .arrow {
         border-left: var(--gr-tooltip-arrow-size) solid transparent;
         border-right: var(--gr-tooltip-arrow-size) solid transparent;
@@ -45,8 +47,10 @@
         width: 0;
       }
     </style>
-    [[text]]
-    <i class="arrow"></i>
+    <div class="tooltip">
+      [[text]]
+      <i class="arrow"></i>
+    </div>
   </template>
   <script src="gr-tooltip.js"></script>
 </dom-module>
diff --git a/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_test.html b/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_test.html
index efc2a00..e1e6449 100644
--- a/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-tooltip/gr-tooltip_test.html
@@ -19,7 +19,7 @@
 
 <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
 <script src="../../../bower_components/web-component-tester/browser.js"></script>
-
+<link rel="import" href="../../../test/common-test-setup.html"/>
 <link rel="import" href="gr-tooltip.html">
 
 <script>void(0);</script>
diff --git a/polygerrit-ui/app/test/common-test-setup.html b/polygerrit-ui/app/test/common-test-setup.html
new file mode 100644
index 0000000..00bd1e7
--- /dev/null
+++ b/polygerrit-ui/app/test/common-test-setup.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<!--
+Copyright (C) 2017 The Android Open Source Project
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<link rel="import"
+    href="../bower_components/iron-test-helpers/iron-test-helpers.html" />