Add controlled setting indicator for proxy configuration

chrome/browser/resources/options/controlled_setting.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.
 
 cr.define('options', function() {
   var Preferences = options.Preferences;
 
   /**
    * A controlled setting indicator that can be placed on a setting as an
    * indicator that the value is controlled by some external entity such as
@@ skipping 120 matching lines @@
      * Open or close a bubble with further information about the pref.
      * @private
      */
     toggleBubble_: function() {
       if (this.showingBubble) {
         OptionsPage.hideBubble();
       } else {
         var self = this;
 
         // Construct the bubble text.
-        defaultStrings = {
-          'policy': loadTimeData.getString('controlledSettingPolicy'),
-          'extension': loadTimeData.getString('controlledSettingExtension'),
-          'recommended': loadTimeData.getString('controlledSettingRecommended'),
-          'hasRecommendation':
-              loadTimeData.getString('controlledSettingHasRecommendation'),
-        };
+        if (this.hasAttribute('plural')) {
+          var defaultStrings = {
+            'policy': loadTimeData.getString('controlledSettingsPolicy'),
+            'extension': loadTimeData.getString('controlledSettingsExtension'),
+          };
+        } else {
+          var defaultStrings = {
+            'policy': loadTimeData.getString('controlledSettingPolicy'),
+            'extension': loadTimeData.getString('controlledSettingExtension'),
+            'recommended':
+                loadTimeData.getString('controlledSettingRecommended'),
+            'hasRecommendation':
+                loadTimeData.getString('controlledSettingHasRecommendation'),
+          };
+        }
 
         // No controller, no bubble.
         if (!this.controlledBy || !(this.controlledBy in defaultStrings))
           return;
 
         var text = defaultStrings[this.controlledBy];
 
         // Apply text overrides.
         if (this.hasAttribute('text' + this.controlledBy))
           text = this.getAttribute('text' + this.controlledBy);
@@ skipping 64 matching lines @@
    * @type {string}
    */
   cr.defineProperty(ControlledSettingIndicator, 'controlledBy',
                     cr.PropertyKind.ATTR);
 
   // Export.
   return {
     ControlledSettingIndicator: ControlledSettingIndicator
   };
 });