Fix bug where pressing 'a' when logged out would show backdrop

Change-Id: I7976ffcd1ffb14e0833018e99a6661a91967364d

polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js

@@ -306,6 +306,8 @@
 
       switch (e.keyCode) {
         case 65:  // 'a'
+          if (!this._loggedIn) { return; }
+
           e.preventDefault();
           this.$.replyOverlay.open();
           break;

polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.html

@@ -67,8 +67,13 @@ limitations under the License.
           'Should navigate to /');
       showStub.restore();
 
+
       MockInteractions.pressAndReleaseKeyOn(element, 65);  // 'a'
       var overlayEl = element.$.replyOverlay;
+      assert.isFalse(overlayEl.opened);
+      element._loggedIn = true;
+
+      MockInteractions.pressAndReleaseKeyOn(element, 65);  // 'a'
       assert.isTrue(overlayEl.opened);
       overlayEl.close();
       assert.isFalse(overlayEl.opened);