MD Settings: Set all content setting values in Site Details Javascript.

chrome/browser/resources/settings/site_settings/site_details_permission.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
  * 'site-details-permission' handles showing the state of one permission, such
  * as Geolocation, for a given origin.
  */
 Polymer({
@@ skipping 30 matching lines @@
     return this.removePatternWildcard(left) ==
         this.removePatternWildcard(right);
   },
 
   /** @private */
   isCookiesCategory_: function(category) {
     return category == settings.ContentSettingsTypes.COOKIES;
   },
 
   /**
-   * Sets the site to display.
+   * Updates the drop-down value after |site| has changed.
    * @param {!SiteException} site The site to display.
    * @private
    */
   siteChanged_: function(site) {
-
-    this.browserProxy.getExceptionList(this.category)
-        .then(function(exceptionList) {
-          for (var i = 0; i < exceptionList.length; ++i) {
-            if (exceptionList[i].embeddingOrigin == site.embeddingOrigin &&
-                this.sameOrigin_(exceptionList[i].origin, site.origin)) {
-              this.$.permission.value = exceptionList[i].setting;
-              break;
-            }
-          }
-        }.bind(this));
+    this.$.permission.value = site.setting;
   },
 
   /**
    * Called when a site within a category has been changed.
    * @param {number} category The category that changed.
    * @param {string} origin The origin of the site that changed.
    * @param {string} embeddingOrigin The embedding origin of the site that
    *     changed.
    * @private
    */
@@ skipping 22 matching lines @@
   /**
    * Handles the category permission changing for this origin.
    * @private
    */
   onPermissionSelectionChange_: function() {
     this.browserProxy.setCategoryPermissionForOrigin(
         this.site.origin, this.site.embeddingOrigin, this.category,
         this.$.permission.value, this.site.incognito);
   },
 });