MD Settings: clarify "controlled by" logic

ui/webui/resources/cr_elements/policy/cr_policy_pref_indicator.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.
 
 /**
  * @fileoverview Polymer element for indicating policies that apply to an
  * element controlling a settings preference.
  */
 Polymer({
   is: 'cr-policy-pref-indicator',
@@ skipping 17 matching lines @@
      */
     controllingUser: {type: String, value: ''},
 
     /**
      * Which indicator type to show (or NONE).
      * @type {CrPolicyIndicatorType}
      */
     indicatorType: {
       type: String,
       value: CrPolicyIndicatorType.NONE,
-      computed: 'getIndicatorType(pref.policySource, pref.policyEnforcement)',
+      computed: 'getIndicatorType(pref.controlledBy, pref.enforcement)',
     },
   },
 
   /**
    * @param {CrPolicyIndicatorType} type
    * @param {?chrome.settingsPrivate.PrefObject} pref
    * @return {string} The tooltip text for |type|.
    * @private
    */
   getTooltip_: function(type, pref, controllingUser) {
     if (type == CrPolicyIndicatorType.RECOMMENDED) {
       if (pref && pref.value == pref.recommendedValue)
         return this.i18n_('controlledSettingRecommendedMatches');
       return this.i18n_('controlledSettingRecommendedDiffers');
     }
-    var name = pref ? pref.policySourceName : controllingUser;
+    var name = pref ? pref.controlledByName : controllingUser;
     return this.getPolicyIndicatorTooltip(type, name);
   }
 });