diff --git a/polygerrit-ui/app/elements/admin/gr-admin-view/gr-admin-view_test.html b/polygerrit-ui/app/elements/admin/gr-admin-view/gr-admin-view_test.html
index e6eef75..04bdab7 100644
--- a/polygerrit-ui/app/elements/admin/gr-admin-view/gr-admin-view_test.html
+++ b/polygerrit-ui/app/elements/admin/gr-admin-view/gr-admin-view_test.html
@@ -197,7 +197,10 @@
         assert.equal(Polymer.dom(element.root)
             .querySelectorAll('.sectionTitle').length, 3);
         assert.equal(element.$$('.breadcrumbText').innerText, 'Test Repo');
-        assert.equal(element.$$('#pageSelect').items.length, 6);
+        assert.equal(
+            element.shadowRoot.querySelector('#pageSelect').items.length,
+            6
+        );
         done();
       });
     });
@@ -439,13 +442,16 @@
       element.reload().then(() => {
         assert.deepEqual(element._filteredLinks, expectedFilteredLinks);
         assert.deepEqual(element._subsectionLinks, expectedSubsectionLinks);
-        assert.equal(element.$$('#pageSelect').value, 'repoaccess');
+        assert.equal(
+            element.shadowRoot.querySelector('#pageSelect').value,
+            'repoaccess'
+        );
         assert.isTrue(element._selectedIsCurrentPage.calledOnce);
         // Doesn't trigger navigation from the page select menu.
         assert.isFalse(Gerrit.Nav.navigateToRelativeUrl.called);
 
         // When explicitly changed, navigation is called
-        element.$$('#pageSelect').value = 'repo';
+        element.shadowRoot.querySelector('#pageSelect').value = 'repo';
         assert.isTrue(element._selectedIsCurrentPage.calledTwice);
         assert.isTrue(Gerrit.Nav.navigateToRelativeUrl.calledOnce);
         done();
diff --git a/polygerrit-ui/app/elements/admin/gr-permission/gr-permission_test.html b/polygerrit-ui/app/elements/admin/gr-permission/gr-permission_test.html
index 6cb7e4a..7919b28 100644
--- a/polygerrit-ui/app/elements/admin/gr-permission/gr-permission_test.html
+++ b/polygerrit-ui/app/elements/admin/gr-permission/gr-permission_test.html
@@ -385,7 +385,8 @@
 
         assert.isFalse(element._originalExclusiveValue);
         assert.isNotOk(element.permission.value.modified);
-        MockInteractions.tap(element.$$('#exclusiveToggle'));
+        MockInteractions.tap(element.shadowRoot
+            .querySelector('#exclusiveToggle'));
         flushAsynchronousOperations();
         assert.isTrue(element.permission.value.exclusive);
         assert.isTrue(element.permission.value.modified);
@@ -405,21 +406,25 @@
       });
 
       test('Exclusive hidden for owner permission', () => {
-        assert.equal(getComputedStyle(element.$$('#exclusiveToggle')).display,
-            'flex');
+        assert.equal(getComputedStyle(element.shadowRoot
+            .querySelector('#exclusiveToggle')).display,
+        'flex');
         element.set(['permission', 'id'], 'owner');
         flushAsynchronousOperations();
-        assert.equal(getComputedStyle(element.$$('#exclusiveToggle')).display,
-            'none');
+        assert.equal(getComputedStyle(element.shadowRoot
+            .querySelector('#exclusiveToggle')).display,
+        'none');
       });
 
       test('Exclusive hidden for any global permissions', () => {
-        assert.equal(getComputedStyle(element.$$('#exclusiveToggle')).display,
-            'flex');
+        assert.equal(getComputedStyle(element.shadowRoot
+            .querySelector('#exclusiveToggle')).display,
+        'flex');
         element.section = 'GLOBAL_CAPABILITIES';
         flushAsynchronousOperations();
-        assert.equal(getComputedStyle(element.$$('#exclusiveToggle')).display,
-            'none');
+        assert.equal(getComputedStyle(element.shadowRoot
+            .querySelector('#exclusiveToggle')).display,
+        'none');
       });
     });
   });
diff --git a/polygerrit-ui/app/elements/admin/gr-repo-access/gr-repo-access_test.html b/polygerrit-ui/app/elements/admin/gr-repo-access/gr-repo-access_test.html
index 90eaba5..fc7dea8 100644
--- a/polygerrit-ui/app/elements/admin/gr-repo-access/gr-repo-access_test.html
+++ b/polygerrit-ui/app/elements/admin/gr-repo-access/gr-repo-access_test.html
@@ -282,7 +282,8 @@
           id: 'test-project',
         };
         flushAsynchronousOperations();
-        assert.equal(getComputedStyle(element.$$('#editInheritFromInput'))
+        assert.equal(getComputedStyle(element.shadowRoot
+            .querySelector('#editInheritFromInput'))
             .display, 'none');
 
         MockInteractions.tap(element.$.editBtn);
@@ -300,7 +301,8 @@
           assert.notEqual(getComputedStyle(element.$.saveBtn).display, 'none');
           assert.isTrue(element.$.saveBtn.disabled);
         }
-        assert.notEqual(getComputedStyle(element.$$('#editInheritFromInput'))
+        assert.notEqual(getComputedStyle(element.shadowRoot
+            .querySelector('#editInheritFromInput'))
             .display, 'none');
 
         // Save button should be enabled after access is modified
@@ -365,7 +367,7 @@
           id: 'test-project',
         };
         flushAsynchronousOperations();
-        element.$$('#editInheritFromInput').fire('commit');
+        element.shadowRoot.querySelector('#editInheritFromInput').fire('commit');
         sandbox.spy(element, '_handleAccessModified');
         element.fire('access-modified');
         assert.isTrue(element._handleAccessModified.called);
diff --git a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html
index 532c573..d9b7986 100644
--- a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html
+++ b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html
@@ -466,7 +466,9 @@
         element._handleDeleteEditTap();
         assert.isFalse(element.$.confirmDeleteEditDialog.hidden);
         MockInteractions.tap(
-            element.$$('#confirmDeleteEditDialog').$$('gr-button[primary]'));
+            element.shadowRoot
+                .querySelector('#confirmDeleteEditDialog')
+                .$$('gr-button[primary]'));
         flushAsynchronousOperations();
 
         assert.equal(fireActionStub.lastCall.args[0], '/edit');
@@ -980,9 +982,12 @@
 
       test('shows confirm dialog', () => {
         element._handleDeleteTap();
-        assert.isFalse(element.$$('#confirmDeleteDialog').hidden);
+        assert.isFalse(element.shadowRoot
+            .querySelector('#confirmDeleteDialog').hidden);
         MockInteractions.tap(
-            element.$$('#confirmDeleteDialog').$$('gr-button[primary]'));
+            element.shadowRoot
+                .querySelector('#confirmDeleteDialog')
+                .$$('gr-button[primary]'));
         flushAsynchronousOperations();
         assert.isTrue(fireActionStub.calledWith('/', deleteAction, false));
       });
@@ -990,9 +995,12 @@
       test('hides delete confirm on cancel', () => {
         element._handleDeleteTap();
         MockInteractions.tap(
-            element.$$('#confirmDeleteDialog').$$('gr-button:not([primary])'));
+            element.shadowRoot
+                .querySelector('#confirmDeleteDialog')
+                .$$('gr-button:not([primary])'));
         flushAsynchronousOperations();
-        assert.isTrue(element.$$('#confirmDeleteDialog').hidden);
+        assert.isTrue(element.shadowRoot
+            .querySelector('#confirmDeleteDialog').hidden);
         assert.isFalse(fireActionStub.called);
       });
     });
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 5de378b..b9e9e6c 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
@@ -437,7 +437,8 @@
     }
 
     _handleFileTabChange(e) {
-      const selectedIndex = this.$$('#primaryTabs').selected;
+      const selectedIndex = this.shadowRoot
+          .querySelector('#primaryTabs').selected;
       this._showFileTabContent = selectedIndex === 0;
       // Initial tab is the static files list.
       const newSelectedTab =
@@ -458,8 +459,8 @@
         console.warn(e.detail.tab + ' tab not found');
         return;
       }
-      this.$$('#primaryTabs').selected = idx + 1;
-      this.$$('#primaryTabs').scrollIntoView();
+      this.shadowRoot.querySelector('#primaryTabs').selected = idx + 1;
+      this.shadowRoot.querySelector('#primaryTabs').scrollIntoView();
       this.$.reporting.reportInteraction('show-tab', e.detail.tab);
     }
 
@@ -799,7 +800,7 @@
       // Selected has to be set after the paper-tabs are visible because
       // the selected underline depends on calculations made by the browser.
       this.$.commentTabs.selected = 0;
-      const primaryTabs = this.$$('#primaryTabs');
+      const primaryTabs = this.shadowRoot.querySelector('#primaryTabs');
       if (primaryTabs) primaryTabs.selected = 0;
     }
 
diff --git a/polygerrit-ui/app/elements/change/gr-download-dialog/gr-download-dialog.js b/polygerrit-ui/app/elements/change/gr-download-dialog/gr-download-dialog.js
index ab849de..9329ba5 100644
--- a/polygerrit-ui/app/elements/change/gr-download-dialog/gr-download-dialog.js
+++ b/polygerrit-ui/app/elements/change/gr-download-dialog/gr-download-dialog.js
@@ -68,7 +68,8 @@
     }
 
     getFocusStops() {
-      const links = this.$$('#archives').querySelectorAll('a');
+      const links = this.shadowRoot
+          .querySelector('#archives').querySelectorAll('a');
       return {
         start: this.$.closeButton,
         end: links[links.length - 1],
diff --git a/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header_test.html b/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header_test.html
index ea7ea8f..10efaff 100644
--- a/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header_test.html
+++ b/polygerrit-ui/app/elements/change/gr-file-list-header/gr-file-list-header_test.html
@@ -216,8 +216,8 @@
     test('expand/collapse buttons are toggled correctly', () => {
       element.shownFileCount = 10;
       flushAsynchronousOperations();
-      const expandBtn = element.$$('#expandBtn');
-      const collapseBtn = element.$$('#collapseBtn');
+      const expandBtn = element.shadowRoot.querySelector('#expandBtn');
+      const collapseBtn = element.shadowRoot.querySelector('#collapseBtn');
       assert.notEqual(getComputedStyle(expandBtn).display, 'none');
       assert.equal(getComputedStyle(collapseBtn).display, 'none');
       element.filesExpanded = GrFileListConstants.FilesExpandedState.SOME;
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 9caf13d..b0747f4 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
@@ -231,7 +231,8 @@
           .concat(_.times(11, randomMessage));
       flushAsynchronousOperations();
 
-      MockInteractions.tap(element.$$('#collapse-messages')); // Expand all.
+      MockInteractions.tap(element.shadowRoot
+          .querySelector('#collapse-messages')); // Expand all.
       flushAsynchronousOperations();
 
       let messages = getMessages();
@@ -255,8 +256,10 @@
           .concat(_.times(11, randomMessage));
       flushAsynchronousOperations();
 
-      MockInteractions.tap(element.$$('#collapse-messages')); // Expand all.
-      MockInteractions.tap(element.$$('#collapse-messages')); // Collapse all.
+      MockInteractions.tap(element.shadowRoot
+          .querySelector('#collapse-messages')); // Expand all.
+      MockInteractions.tap(element.shadowRoot
+          .querySelector('#collapse-messages')); // Collapse all.
       flushAsynchronousOperations();
 
       let messages = getMessages();
@@ -283,13 +286,15 @@
       MockInteractions.tap(allMessageEls[1]);
       assert.isTrue(allMessageEls[1]._expanded);
 
-      MockInteractions.tap(element.$$('#collapse-messages'));
+      MockInteractions.tap(element.shadowRoot
+          .querySelector('#collapse-messages'));
       allMessageEls = getMessages();
       for (const message of allMessageEls) {
         assert.isTrue(message._expanded);
       }
 
-      MockInteractions.tap(element.$$('#collapse-messages'));
+      MockInteractions.tap(element.shadowRoot
+          .querySelector('#collapse-messages'));
       allMessageEls = getMessages();
       for (const message of allMessageEls) {
         assert.isFalse(message._expanded);
@@ -297,28 +302,33 @@
     });
 
     test('expand/collapse from external keypress', () => {
-      MockInteractions.tap(element.$$('#collapse-messages'));
+      MockInteractions.tap(element.shadowRoot
+          .querySelector('#collapse-messages'));
       let allMessageEls = getMessages();
       for (const message of allMessageEls) {
         assert.isTrue(message._expanded);
       }
 
       // Expand/collapse all text also changes.
-      assert.equal(element.$$('#collapse-messages').textContent.trim(),
-          'Collapse all');
+      assert.equal(element.shadowRoot
+          .querySelector('#collapse-messages').textContent.trim(),
+      'Collapse all');
 
-      MockInteractions.tap(element.$$('#collapse-messages'));
+      MockInteractions.tap(element.shadowRoot
+          .querySelector('#collapse-messages'));
       allMessageEls = getMessages();
       for (const message of allMessageEls) {
         assert.isFalse(message._expanded);
       }
       // Expand/collapse all text also changes.
-      assert.equal(element.$$('#collapse-messages').textContent.trim(),
-          'Expand all');
+      assert.equal(element.shadowRoot
+          .querySelector('#collapse-messages').textContent.trim(),
+      'Expand all');
     });
 
     test('hide messages does not appear when no automated messages', () => {
-      assert.isOk(element.$$('#automatedMessageToggleContainer[hidden]'));
+      assert.isOk(element.shadowRoot
+          .querySelector('#automatedMessageToggleContainer[hidden]'));
     });
 
     test('scroll to message', () => {
@@ -476,7 +486,8 @@
     });
 
     test('hide autogenerated button is not hidden', () => {
-      assert.isNotOk(element.$$('#automatedMessageToggle[hidden]'));
+      assert.isNotOk(element.shadowRoot
+          .querySelector('#automatedMessageToggle[hidden]'));
     });
 
     test('autogenerated messages are not hidden initially', () => {
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 badd62a..e44f669 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
@@ -187,7 +187,7 @@
     });
 
     test('keep drafts with reply', done => {
-      MockInteractions.tap(element.$$('#includeComments'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#includeComments'));
       assert.equal(element._includeComments, false);
 
       // Async tick is needed because iron-selector content is distributed and
@@ -460,7 +460,8 @@
       flushAsynchronousOperations();
       assert.isFalse(element._reviewersMutated);
       assert.isTrue(element.$.ccs.allowAnyInput);
-      assert.isFalse(element.$$('#reviewers').allowAnyInput);
+      assert.isFalse(element.shadowRoot
+          .querySelector('#reviewers').allowAnyInput);
       element.$.ccs.dispatchEvent(new CustomEvent('account-text-changed',
           {bubbles: true, composed: true}));
       assert.isTrue(element._reviewersMutated);
diff --git a/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls_test.html b/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls_test.html
index 2d7dc9c..b7e52a1 100644
--- a/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls_test.html
+++ b/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls_test.html
@@ -82,7 +82,7 @@
     });
 
     test('open', () => {
-      MockInteractions.tap(element.$$('#open'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#open'));
       element.patchNum = 1;
       return showDialogSpy.lastCall.returnValue.then(() => {
         assert.isTrue(element._hideAllDialogs.called);
@@ -101,7 +101,7 @@
     });
 
     test('cancel', () => {
-      MockInteractions.tap(element.$$('#open'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#open'));
       return showDialogSpy.lastCall.returnValue.then(() => {
         assert.isTrue(element.$.openDialog.disabled);
         openAutoCcmplete.noDebounce = true;
@@ -129,7 +129,7 @@
 
     test('delete', () => {
       deleteStub.returns(Promise.resolve({ok: true}));
-      MockInteractions.tap(element.$$('#delete'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#delete'));
       return showDialogSpy.lastCall.returnValue.then(() => {
         assert.isTrue(element.$.deleteDialog.disabled);
         assert.isFalse(queryStub.called);
@@ -152,7 +152,7 @@
 
     test('delete fails', () => {
       deleteStub.returns(Promise.resolve({ok: false}));
-      MockInteractions.tap(element.$$('#delete'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#delete'));
       return showDialogSpy.lastCall.returnValue.then(() => {
         assert.isTrue(element.$.deleteDialog.disabled);
         assert.isFalse(queryStub.called);
@@ -173,7 +173,7 @@
     });
 
     test('cancel', () => {
-      MockInteractions.tap(element.$$('#delete'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#delete'));
       return showDialogSpy.lastCall.returnValue.then(() => {
         assert.isTrue(element.$.deleteDialog.disabled);
         element.$.deleteDialog.querySelector('gr-autocomplete').text =
@@ -204,7 +204,7 @@
 
     test('rename', () => {
       renameStub.returns(Promise.resolve({ok: true}));
-      MockInteractions.tap(element.$$('#rename'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#rename'));
       return showDialogSpy.lastCall.returnValue.then(() => {
         assert.isTrue(element.$.renameDialog.disabled);
         assert.isFalse(queryStub.called);
@@ -232,7 +232,7 @@
 
     test('rename fails', () => {
       renameStub.returns(Promise.resolve({ok: false}));
-      MockInteractions.tap(element.$$('#rename'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#rename'));
       return showDialogSpy.lastCall.returnValue.then(() => {
         assert.isTrue(element.$.renameDialog.disabled);
         assert.isFalse(queryStub.called);
@@ -258,7 +258,7 @@
     });
 
     test('cancel', () => {
-      MockInteractions.tap(element.$$('#rename'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#rename'));
       return showDialogSpy.lastCall.returnValue.then(() => {
         assert.isTrue(element.$.renameDialog.disabled);
         element.$.renameDialog.querySelector('gr-autocomplete').text =
@@ -285,13 +285,14 @@
     });
 
     test('restore hidden by default', () => {
-      assert.isTrue(element.$$('#restore').classList.contains('invisible'));
+      assert.isTrue(element.shadowRoot
+          .querySelector('#restore').classList.contains('invisible'));
     });
 
     test('restore', () => {
       restoreStub.returns(Promise.resolve({ok: true}));
       element._path = 'src/test.cpp';
-      MockInteractions.tap(element.$$('#restore'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#restore'));
       return showDialogSpy.lastCall.returnValue.then(() => {
         MockInteractions.tap(element.$.restoreDialog.$$('gr-button[primary]'));
         flushAsynchronousOperations();
@@ -309,7 +310,7 @@
     test('restore fails', () => {
       restoreStub.returns(Promise.resolve({ok: false}));
       element._path = 'src/test.cpp';
-      MockInteractions.tap(element.$$('#restore'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#restore'));
       return showDialogSpy.lastCall.returnValue.then(() => {
         MockInteractions.tap(element.$.restoreDialog.$$('gr-button[primary]'));
         flushAsynchronousOperations();
@@ -325,7 +326,7 @@
 
     test('cancel', () => {
       element._path = 'src/test.cpp';
-      MockInteractions.tap(element.$$('#restore'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#restore'));
       return showDialogSpy.lastCall.returnValue.then(() => {
         MockInteractions.tap(element.$.restoreDialog.$$('gr-button'));
         assert.isFalse(navStub.called);
diff --git a/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.js b/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.js
index dd2855c..266280f 100644
--- a/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.js
+++ b/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.js
@@ -196,14 +196,15 @@
     }
 
     get textarea() {
-      return this.$$('#editTextarea');
+      return this.shadowRoot.querySelector('#editTextarea');
     }
 
     get confirmDeleteOverlay() {
       if (!this._overlays.confirmDelete) {
         this._enableOverlay = true;
         Polymer.dom.flush();
-        this._overlays.confirmDelete = this.$$('#confirmDeleteOverlay');
+        this._overlays.confirmDelete = this.shadowRoot
+            .querySelector('#confirmDeleteOverlay');
       }
       return this._overlays.confirmDelete;
     }
@@ -212,7 +213,8 @@
       if (!this._overlays.confirmDiscard) {
         this._enableOverlay = true;
         Polymer.dom.flush();
-        this._overlays.confirmDiscard = this.$$('#confirmDiscardOverlay');
+        this._overlays.confirmDiscard = this.shadowRoot
+            .querySelector('#confirmDiscardOverlay');
       }
       return this._overlays.confirmDiscard;
     }
diff --git a/polygerrit-ui/app/elements/shared/gr-list-view/gr-list-view_test.html b/polygerrit-ui/app/elements/shared/gr-list-view/gr-list-view_test.html
index 8f87b38..f99d5d9 100644
--- a/polygerrit-ui/app/elements/shared/gr-list-view/gr-list-view_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-list-view/gr-list-view_test.html
@@ -126,11 +126,13 @@
     });
 
     test('createNew link appears correctly', () => {
-      assert.isFalse(element.$$('#createNewContainer').classList
+      assert.isFalse(element.shadowRoot
+          .querySelector('#createNewContainer').classList
           .contains('show'));
       element.createNew = true;
       flushAsynchronousOperations();
-      assert.isTrue(element.$$('#createNewContainer').classList
+      assert.isTrue(element.shadowRoot
+          .querySelector('#createNewContainer').classList
           .contains('show'));
     });
 
@@ -139,7 +141,7 @@
       element.addEventListener('create-clicked', clickHandler);
       element.createNew = true;
       flushAsynchronousOperations();
-      MockInteractions.tap(element.$$('#createNew'));
+      MockInteractions.tap(element.shadowRoot.querySelector('#createNew'));
       assert.isTrue(clickHandler.called);
     });