diff --git a/plugins/codemirror-editor b/plugins/codemirror-editor
index 53dccff..318504d 160000
--- a/plugins/codemirror-editor
+++ b/plugins/codemirror-editor
@@ -1 +1 @@
-Subproject commit 53dccff17c029459999ff70ac886b80626af634b
+Subproject commit 318504d0eb74f2f9c2967e9865ace6d5b57638c6
diff --git a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html
index 6ea7cf3..332121f 100644
--- a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html
+++ b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html
@@ -171,10 +171,10 @@
     </td>
     <td class="cell project"
         hidden$="[[isColumnHidden('Project', visibleChangeTableColumns)]]">
-      <a class="fullProject" href$="[[_computeProjectURL(change.project)]]">
+      <a class="fullProject" href$="[[_computeProjectURL(change)]]">
         [[change.project]]
       </a>
-      <a class="truncatedProject" href$="[[_computeProjectURL(change.project)]]">
+      <a class="truncatedProject" href$="[[_computeProjectURL(change)]]">
         [[_computeTruncatedProject(change.project)]]
       </a>
     </td>
diff --git a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.js b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.js
index 259580b..53cc990 100644
--- a/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.js
+++ b/polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.js
@@ -122,17 +122,19 @@
       return '';
     },
 
-    _computeProjectURL(project) {
-      return Gerrit.Nav.getUrlForProjectChanges(project, true);
+    _computeProjectURL(change) {
+      return Gerrit.Nav.getUrlForProjectChanges(change.project, true,
+          change.internalHost);
     },
 
     _computeProjectBranchURL(change) {
-      return Gerrit.Nav.getUrlForBranch(change.branch, change.project);
+      return Gerrit.Nav.getUrlForBranch(change.branch, change.project, null,
+          change.internalHost);
     },
 
     _computeTopicURL(change) {
       if (!change.topic) { return ''; }
-      return Gerrit.Nav.getUrlForTopic(change.topic);
+      return Gerrit.Nav.getUrlForTopic(change.topic, change.internalHost);
     },
 
     _computeTruncatedProject(project) {
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 81e1034..4fa6ff5 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
@@ -37,8 +37,10 @@
 <script>
   suite('gr-change-list-item tests', () => {
     let element;
+    let sandbox;
 
     setup(() => {
+      sandbox = sinon.sandbox.create();
       stub('gr-rest-api-interface', {
         getConfig() { return Promise.resolve({}); },
         getLoggedIn() { return Promise.resolve(false); },
@@ -46,6 +48,8 @@
       element = fixture('basic');
     });
 
+    teardown(() => { sandbox.restore(); });
+
     test('computed fields', () => {
       assert.equal(element._computeLabelClass({labels: {}}),
           'cell label u-gray-background');
@@ -249,5 +253,25 @@
         deletions: 999,
       }), 'XL');
     });
+
+    test('change params passed to gr-navigation', () => {
+      sandbox.stub(Gerrit.Nav);
+      const change = {
+        internalHost: 'test-host',
+        project: 'test-repo',
+        topic: 'test-topic',
+        branch: 'test-branch',
+      };
+      element.change = change;
+      flushAsynchronousOperations();
+
+      assert.deepEqual(Gerrit.Nav.getUrlForChange.lastCall.args, [change]);
+      assert.deepEqual(Gerrit.Nav.getUrlForProjectChanges.lastCall.args,
+          [change.project, true, change.internalHost]);
+      assert.deepEqual(Gerrit.Nav.getUrlForBranch.lastCall.args,
+          [change.branch, change.project, null, change.internalHost]);
+      assert.deepEqual(Gerrit.Nav.getUrlForTopic.lastCall.args,
+          [change.topic, change.internalHost]);
+    });
   });
 </script>
diff --git a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html
index 5a56475..1b911e0 100644
--- a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html
+++ b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html
@@ -273,6 +273,12 @@
         #commitMessageEditor {
           min-width: 0;
         }
+        .commitMessage {
+          margin-right: 0;
+        }
+        .mainChangeInfo {
+          padding-right: 0;
+        }
       }
       /* NOTE: If you update this breakpoint, also update the
       BREAKPOINT_RELATED_SMALL in the JS */
diff --git a/polygerrit-ui/app/elements/core/gr-navigation/gr-navigation.html b/polygerrit-ui/app/elements/core/gr-navigation/gr-navigation.html
index e217b4b..dfe5410 100644
--- a/polygerrit-ui/app/elements/core/gr-navigation/gr-navigation.html
+++ b/polygerrit-ui/app/elements/core/gr-navigation/gr-navigation.html
@@ -177,13 +177,15 @@
        * @param {!string} project The name of the project.
        * @param {boolean=} opt_openOnly When true, only search open changes in
        *     the project.
+       * @param {string=} opt_host The host in which to search.
        * @return {string}
        */
-      getUrlForProjectChanges(project, opt_openOnly) {
+      getUrlForProjectChanges(project, opt_openOnly, opt_host) {
         return this._getUrlFor({
           view: Gerrit.Nav.View.SEARCH,
           project,
           statuses: opt_openOnly ? ['open'] : [],
+          host: opt_host,
         });
       },
 
@@ -191,26 +193,30 @@
        * @param {string} branch The name of the branch.
        * @param {string} project The name of the project.
        * @param {string=} opt_status The status to search.
+       * @param {string=} opt_host The host in which to search.
        * @return {string}
        */
-      getUrlForBranch(branch, project, opt_status) {
+      getUrlForBranch(branch, project, opt_status, opt_host) {
         return this._getUrlFor({
           view: Gerrit.Nav.View.SEARCH,
           branch,
           project,
           statuses: opt_status ? [opt_status] : undefined,
+          host: opt_host,
         });
       },
 
       /**
        * @param {string} topic The name of the topic.
+       * @param {string=} opt_host The host in which to search.
        * @return {string}
        */
-      getUrlForTopic(topic) {
+      getUrlForTopic(topic, opt_host) {
         return this._getUrlFor({
           view: Gerrit.Nav.View.SEARCH,
           topic,
           statuses: ['open', 'merged'],
+          host: opt_host,
         });
       },
 
@@ -267,6 +273,7 @@
           patchNum: opt_patchNum,
           basePatchNum: opt_basePatchNum,
           edit: opt_isEdit,
+          host: change.internalHost || undefined,
         });
       },
 
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.js b/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.js
index ea69fc2..edf9f5a 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.js
@@ -457,7 +457,11 @@
         this._discardDraft();
         return;
       }
-      this._openOverlay(this.confirmDiscardOverlay);
+
+      this._openOverlay(this.confirmDiscardOverlay).then(() => {
+        this.confirmDiscardOverlay.querySelector('#confirmDiscardDialog')
+            .resetFocus();
+      });
     },
 
     _handleConfirmDiscard(e) {
@@ -626,9 +630,7 @@
 
     _openOverlay(overlay) {
       Polymer.dom(Gerrit.getRootElement()).appendChild(overlay);
-      this.async(() => {
-        overlay.open();
-      }, 1);
+      return overlay.open();
     },
 
     _closeOverlay(overlay) {
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 b41ab23..f1ac649 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
@@ -614,7 +614,8 @@
 
       setup(() => {
         discardStub = sandbox.stub(element, '_discardDraft');
-        overlayStub = sandbox.stub(element, '_openOverlay');
+        overlayStub = sandbox.stub(element, '_openOverlay')
+            .returns(Promise.resolve());
         mockEvent = {preventDefault: sinon.stub()};
       });
 
diff --git a/polygerrit-ui/externs/BUILD b/polygerrit-ui/externs/BUILD
new file mode 100644
index 0000000..fab3954
--- /dev/null
+++ b/polygerrit-ui/externs/BUILD
@@ -0,0 +1,25 @@
+# Copyright (C) 2018 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.
+
+package(
+    default_visibility = ["//visibility:public"],
+)
+
+load("@io_bazel_rules_closure//closure:defs.bzl", "closure_js_library")
+
+closure_js_library(
+    name = "plugin",
+    srcs = ["plugin.js"],
+    no_closure_library = True,
+)
diff --git a/polygerrit-ui/externs/plugin.js b/polygerrit-ui/externs/plugin.js
new file mode 100644
index 0000000..edace7d
--- /dev/null
+++ b/polygerrit-ui/externs/plugin.js
@@ -0,0 +1,28 @@
+/**
+ * @license
+ * Copyright (C) 2018 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.
+ */
+
+/**
+ * @fileoverview Closure compiler externs for the Gerrit UI plugins.
+ * @externs
+ */
+
+var Gerrit = {};
+
+/**
+ * @param {!Function} callback
+ */
+Gerrit.install = function(callback) {};
diff --git a/tools/bzl/js.bzl b/tools/bzl/js.bzl
index fbacfad..03ee87c 100644
--- a/tools/bzl/js.bzl
+++ b/tools/bzl/js.bzl
@@ -3,6 +3,7 @@
 GERRIT = "GERRIT:"
 
 load("//lib/js:npm.bzl", "NPM_SHA1S", "NPM_VERSIONS")
+load("@io_bazel_rules_closure//closure:defs.bzl", "closure_js_binary", "closure_js_library")
 
 def _npm_tarball(name):
     return "%s@%s.npm_binary.tgz" % (name, NPM_VERSIONS[name])
@@ -146,9 +147,9 @@
         transitive_versions += d.transitive_versions
 
     return struct(
-        transitive_zipfiles = transitive_zipfiles,
-        transitive_versions = transitive_versions,
         transitive_licenses = transitive_licenses,
+        transitive_versions = transitive_versions,
+        transitive_zipfiles = transitive_zipfiles,
     )
 
 _common_attrs = {
@@ -187,9 +188,9 @@
         licenses += depset([ctx.file.license])
 
     return struct(
-        transitive_zipfiles = list([ctx.outputs.zip]),
-        transitive_versions = depset(),
         transitive_licenses = licenses,
+        transitive_versions = depset(),
+        transitive_zipfiles = list([ctx.outputs.zip]),
     )
 
 js_component = rule(
@@ -271,9 +272,9 @@
     )
 
     return struct(
-        transitive_zipfiles = zips,
-        transitive_versions = versions,
         transitive_licenses = licenses,
+        transitive_versions = versions,
+        transitive_zipfiles = zips,
     )
 
 bower_component_bundle = rule(
@@ -341,8 +342,8 @@
     # from the environment, and it may be under $HOME, so we can't run
     # in the sandbox.
     node_tweaks = dict(
-        use_default_shell_env = True,
         execution_requirements = {"local": "1"},
+        use_default_shell_env = True,
     )
     ctx.actions.run_shell(
         mnemonic = "Vulcanize",
@@ -427,6 +428,87 @@
     """Vulcanize runs vulcanize and (optionally) crisper on a set of sources."""
     _vulcanize_rule(*args, pkg = PACKAGE_NAME, **kwargs)
 
-def polygerrit_plugin(*args, **kwargs):
-    """Bundles plugin dependencies for deployment."""
-    _vulcanize_rule(*args, pkg = PACKAGE_NAME, **kwargs)
+def polygerrit_plugin(name, app, srcs = [], assets = None, **kwargs):
+    """Bundles plugin dependencies for deployment.
+
+    This rule bundles all Polymer elements and JS dependencies into .html and .js files.
+    Run-time dependencies (e.g. JS libraries loaded after plugin starts) should be provided using "assets" property.
+    Output of this rule is a FileSet with "${name}_fs", with deploy artifacts in "plugins/${name}/static".
+
+    Args:
+      name: String, plugin name.
+      app: String, the main or root source file.
+      assets: Fileset, additional files to be used by plugin in runtime, exported to "plugins/${name}/static".
+      srcs: Source files required for combining.
+    """
+
+    # Combines all .js and .html files into foo_combined.js and foo_combined.html
+    _vulcanize_rule(name = name + "_combined", app = app, srcs = srcs + [app], pkg = PACKAGE_NAME, **kwargs)
+
+    closure_js_binary(
+        name = name + "_bin",
+        compilation_level = "SIMPLE",
+        defs = [
+            "--polymer_version=1",
+            "--language_out=ECMASCRIPT6",
+            "--rewrite_polyfills=false",
+        ],
+        deps = [
+            name + "_closure_lib",
+        ],
+    )
+
+    closure_js_library(
+        name = name + "_closure_lib",
+        srcs = [name + "_combined.js"],
+        convention = "GOOGLE",
+        no_closure_library = True,
+        deps = [
+            "//lib/polymer_externs:polymer_closure",
+            "//polygerrit-ui/externs:plugin",
+        ],
+    )
+
+    native.genrule(
+        name = name + "_rename_html",
+        srcs = [name + "_combined.html"],
+        outs = [name + ".html"],
+        cmd = "sed 's/<script src=\"" + name + "_combined.js\"/<script src=\"" + name + ".js\"/g' $(SRCS) > $(OUTS)",
+        output_to_bindir = True,
+    )
+
+    native.genrule(
+        name = name + "_rename_js",
+        srcs = [name + "_bin.js"],
+        outs = [name + ".js"],
+        cmd = "cp $< $@",
+        output_to_bindir = True,
+    )
+
+    static_files = [
+        name + ".js",
+        name + ".html",
+    ]
+
+    if assets:
+        nested, direct = [], []
+        for x in assets:
+            target = nested if "/" in x else direct
+            target.append(x)
+
+        static_files += direct
+
+        if nested:
+            native.genrule(
+                name = name + "_copy_assets",
+                srcs = assets,
+                outs = [f.split("/")[-1] for f in nested],
+                cmd = "cp $(SRCS) $(@D)",
+                output_to_bindir = True,
+            )
+            static_files += [":" + name + "_copy_assets"]
+
+    native.filegroup(
+        name = name,
+        srcs = static_files,
+    )