MD Settings People: Fix ChromeOS Change Picture arrow keys

chrome/test/data/webui/settings/people_page_change_picture_test.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('settings_people_page_change_picture', function() {
   /**
    * @constructor
    * @implements {settings.ChangePictureBrowserProxy}
    * @extends {settings.TestBrowserProxy}
    */
@@ skipping 183 matching lines @@
         return browserProxy.whenCalled('selectDefaultImage').then(
             function(args) {
               expectEquals('chrome://foo/1.png', args[0]);
 
               Polymer.dom.flush();
               expectEquals(ChangePictureSelectionTypes.DEFAULT,
                            changePicture.selectedItem_.dataset.type);
               expectEquals(firstDefaultImage, changePicture.selectedItem_);
               expectFalse(settingsCamera.cameraActive);
               expectTrue(discardControlBar.hidden);
+
+              // Now verify that arrow keys actually select the new image.
+              browserProxy.resetResolver('selectDefaultImage');
+              MockInteractions.pressAndReleaseKeyOn(
+                  changePicture.selectedItem_, 39 /* right */);
+              return browserProxy.whenCalled('selectDefaultImage');
+            }).then(function(args) {
+              expectEquals('chrome://foo/2.png', args[0]);
             });
       });
 
       test('ChangePictureRestoreImageAfterDiscard', function() {
         var firstDefaultImage = changePicture.$$('img[data-type="default"]');
         assertTrue(!!firstDefaultImage);
         var discardOldImage = changePicture.$.discardOldImage;
         assertTrue(!!discardOldImage);
 
         MockInteractions.tap(firstDefaultImage);
@@ skipping 16 matching lines @@
       });
     });
   }
 
   return {
     registerTests: function() {
       registerChangePictureTests();
     },
   };
 });