Add setting to isolate zoom changes by default.

chrome/browser/ui/webui/options/options_browsertest.js

 // Copyright (c) 2012 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.
 
 GEN_INCLUDE(['options_browsertest_base.js']);
 GEN('#include "chrome/browser/ui/webui/options/options_browsertest.h"');
 
 /** @const */ var SUPERVISED_USERS_PREF = 'profile.managed_users';
 
 /**
@@ skipping 44 matching lines @@
   /** @override */
   isAsync: true,
 
   /**
    * Register a mock handler to ensure expectations are met and options pages
    * behave correctly.
    */
   preLoad: function() {
     this.makeAndRegisterMockHandler(
         ['defaultZoomFactorAction',
+         'defaultZoomScopeAction',
          'fetchPrefs',
          'observePrefs',
          'setBooleanPref',
          'setIntegerPref',
          'setDoublePref',
          'setStringPref',
          'setObjectPref',
          'clearPref',
          'coreOptionsUserMetricsAction',
         ]);
@@ skipping 121 matching lines @@
   // the javascript handler was invoked once.
   this.mockHandler.expects(once()).defaultZoomFactorAction(NOT_NULL).
       will(callFunction(function() { }));
   defaultZoomFactor.selectedIndex = defaultZoomFactor.options.length - 1;
   var event = {target: defaultZoomFactor};
   if (defaultZoomFactor.onchange) defaultZoomFactor.onchange(event);
   testDone();
 });
 
 /**
+ * Test the default zoom scope checkbox.
+ */
+TEST_F('OptionsWebUITest', 'testDefaultZoomScope', function() {
+  // Verify that the zoom scope checkbox exists.
+  var defaultZoomScope = $('defaultZoomScope');
+  assertNotEquals(defaultZoomScope, null);
+  var initialValue = $('defaultZoomScope').checked;
+
+  this.mockHandler.expects(once()).defaultZoomScopeAction([!initialValue]);
+  defaultZoomScope.click();
+  testDone();
+});
+
+/**
  * If |confirmInterstitial| is true, the OK button of the Do Not Track
  * interstitial is pressed, otherwise the abort button is pressed.
  * @param {boolean} confirmInterstitial Whether to confirm the Do Not Track
  *     interstitial.
  */
 OptionsWebUITest.prototype.testDoNotTrackInterstitial =
     function(confirmInterstitial) {
   Preferences.prefsFetchedCallback({'enable_do_not_track': {'value': false}});
   var buttonToClick = confirmInterstitial ? $('do-not-track-confirm-ok') :
                                             $('do-not-track-confirm-cancel');
@@ skipping 743 matching lines @@
   __proto__: OptionsWebUIExtendedTest.prototype,
 
   /** @override */
   browsePreload: 'chrome://settings-frame/nonexistantPage',
 };
 
 TEST_F('OptionsWebUIRedirectTest', 'TestURL', function() {
   assertEquals('chrome://settings-frame/', document.location.href);
   this.verifyHistory_([''], testDone);
 });