Introduce a field trial for Instant.

chrome/test/data/webui/options.js

 // Copyright (c) 2011 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.
 
 /**
  * TestFixture for OptionsPage WebUI testing.
  * @extends {testing.Test}
  * @constructor
  **/
 function OptionsWebUITest() {}
@@ skipping 22 matching lines @@
       coreOptionsInitialize: function() {},
       fetchPrefs: function() {},
       observePrefs: function() {},
       setBooleanPref: function() {},
       setIntegerPref: function() {},
       setDoublePref: function() {},
       setStringPref: function() {},
       setObjectPref: function() {},
       clearPref: function() {},
       coreOptionsUserMetricsAction: function() {},
+      // TODO(scr): Handle this new message:
+      // getInstantFieldTrialStatus: function() {},
     };
 
     // Create the actual mock and register stubs for methods expected to be
     // called before our tests run.  Specific expectations can be made in the
     // tests themselves.
     var mockHandler = this.mockHandler = mock(MockOptionsHandler);
     mockHandler.stubs().fetchPrefs(ANYTHING);
     mockHandler.stubs().observePrefs(ANYTHING);
     mockHandler.stubs().coreOptionsInitialize();
 
@@ skipping 51 matching lines @@
 });
 
 // Test that there are no console errors after opening all registered pages.
 // crbug.com/90420
 TEST_F('OptionsWebUITest', 'FLAKY_testOpenAllOptionsPages', function() {
   expectTrue(!!OptionsPage.registeredPages);
   for (var name in OptionsPage.registeredPages) {
     OptionsPage.showPageByName(name, false);
   }
 });