Site Settings Desktop: Implement protocol handler section.

chrome/browser/resources/settings/site_settings_page/site_settings_page.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
  * 'settings-site-settings-page' is the settings page containing privacy and
  * security site settings.
  */
 Polymer({
@@ skipping 34 matching lines @@
         '#geolocation');
     this.setDefaultValue_(this.ContentSettingsTypes.IMAGES, '#images');
     this.setDefaultValue_(this.ContentSettingsTypes.JAVASCRIPT,
         '#javascript');
     this.setDefaultValue_(this.ContentSettingsTypes.KEYGEN, '#keygen');
     this.setDefaultValue_(this.ContentSettingsTypes.MIC, '#mic');
     this.setDefaultValue_(this.ContentSettingsTypes.NOTIFICATIONS,
         '#notifications');
     this.setDefaultValue_(this.ContentSettingsTypes.PLUGINS, '#plugins');
     this.setDefaultValue_(this.ContentSettingsTypes.POPUPS, '#popups');
+    this.setDefaultValue_(this.ContentSettingsTypes.PROTOCOL_HANDLERS,
+        '#handlers');
     this.setDefaultValue_(this.ContentSettingsTypes.UNSANDBOXED_PLUGINS,
         '#unsandboxedPlugins');
   },
 
   setDefaultValue_: function(category, id) {
     this.browserProxy.getDefaultValueForContentType(
         category).then(function(enabled) {
           var description = this.computeCategoryDesc(category, enabled, false);
           this.$$(id).innerText = description;
         }.bind(this));
   },
 
   /**
    * Handles selection of a single category and navigates to the details for
    * that category.
    * @param {!Event} event The tap event.
    */
   onTapCategory: function(event) {
     var category = event.currentTarget.getAttribute('category');
     if (category == settings.ALL_SITES) {
       this.currentRoute = {
         page: this.currentRoute.page,
         section: 'privacy',
         subpage: ['site-settings', 'all-sites'],
       };
+    } else if (category == this.ContentSettingsTypes.PROTOCOL_HANDLERS) {
+      this.currentRoute = {
+        page: this.currentRoute.page,
+        section: 'privacy',
+        subpage: ['site-settings', 'protocol-handlers'],
+      };
     } else {
       this.categorySelected = this.computeCategoryTextId(category);
       this.currentRoute = {
         page: this.currentRoute.page,
         section: 'privacy',
         subpage: ['site-settings', 'site-settings-category-' +
             this.categorySelected],
       };
     }
   },
 });