Convert now component to use GCM rather than pushMessaging.

chrome/browser/resources/google_now/background_unittest.gtestjs

 // Copyright 2013 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.
 
 // TODO(robliao,vadimt): Determine the granularity of testing to perform.
 
 /**
  * Test fixture for background.js.
  * @constructor
  * @extends {testing.Test}
@@ skipping 695 matching lines @@
           tasksAddSavedArgs.match(ANYTHING)).
       will(invokeCallback(tasksAddSavedArgs, 1, function() {}));
 
   // The ordering here between stubs and expects is important.
   // We only care about the EXTENSION_START event. The other events are covered
   // by the NoCards tests below. Reversing the calls will cause all recordEvent
   // calls to be unexpected.
   fixture.mockGlobals.stubs().recordEvent(ANYTHING);
   fixture.mockGlobals.
       expects(once()).recordEvent(GoogleNowEvent.EXTENSION_START);
+  fixture.mockApis.expects(once())
+      .fillFromChromeLocalStorage(eqJSON({gcmNotificationKey: undefined}))
+      .will(returnValue(Promise.resolve({gcmNotificationKey: 'gcmkey'})));
+
 }
 
 TEST_F(TEST_NAME,'Initialize_SignedOut', function() {
   // Tests the case when getAuthToken fails most likely because the user is
   // not signed in. In this case, the function should quietly exit after
   // finding out that getAuthToken fails.
 
   // Setup and expectations.
   var testIdentityToken = undefined;
   var testExperimentVariationParams = {};
@@ skipping 615 matching lines @@
 
   this.mockApis.expects(once()).
       chrome_storage_local_set(eqJSON({googleNowEnabled: false}));
 
   this.mockGlobals.expects(never()).scheduleNextCardsPoll();
 
   // Invoking the tested function.
   processServerResponse(serverResponse);
 });