Auto-focus on confirm button in submit dialog

Change-Id: I5328e1d4ffc49019198ac8995ebff72b4684b192

polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html

@@ -251,11 +251,12 @@ limitations under the License.
     });
 
     test('submit change', done => {
+      element.$.confirmSubmitDialog.$.confirm.focus = done;
       sandbox.stub(element.$.restAPI, 'getFromProjectLookup')
           .returns(Promise.resolve('test'));
       sandbox.stub(element, 'fetchChangeUpdates',
           () => { return Promise.resolve({isLatest: true}); });
-      const showDialogStub = sandbox.stub(element, '_showActionDialog');
+      sandbox.stub(element.$.overlay, 'open').returns(Promise.resolve());
       element.change = {
         revisions: {
           rev1: {_number: 1},
@@ -264,16 +265,9 @@ limitations under the License.
       };
       element.latestPatchNum = '2';
 
-      flush(() => {
-        const submitButton = element.$$('gr-button[data-action-key="submit"]');
-        assert.ok(submitButton);
-        MockInteractions.tap(submitButton);
-
-        assert.isTrue(showDialogStub.calledOnce);
-        assert.equal(showDialogStub.lastCall.args[0],
-            element.$.confirmSubmitDialog);
-        done();
-      });
+      const submitButton = element.$$('gr-button[data-action-key="submit"]');
+      assert.ok(submitButton);
+      MockInteractions.tap(submitButton);
     });
 
     test('_handleSubmitConfirm', () => {

polygerrit-ui/app/elements/shared/gr-confirm-dialog/gr-confirm-dialog.html

@@ -60,7 +60,7 @@ limitations under the License.
       <main><slot name="main"></slot></main>
       <footer>
         <gr-button link on-tap="_handleCancelTap">[[cancelLabel]]</gr-button>
-        <gr-button link primary on-tap="_handleConfirm" disabled="[[disabled]]">
+        <gr-button id="confirm" link primary on-tap="_handleConfirm" disabled="[[disabled]]">
           [[confirmLabel]]
         </gr-button>
       </footer>

polygerrit-ui/app/elements/shared/gr-confirm-dialog/gr-confirm-dialog.js

@@ -70,5 +70,9 @@
     _handleKeydown(e) {
       if (this.confirmOnEnter && e.keyCode === 13) { this._handleConfirm(e); }
     },
+
+    resetFocus() {
+      this.$.confirm.focus();
+    },
   });
 })();