Site Settings Desktop: Implement protocol handler section.

chrome/browser/resources/settings/site_settings/site_settings_prefs_browser_proxy.js

 // Copyright 2016 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 A helper object used from the "Site Settings" section to
  * interact with the content settings prefs.
  */
 
 /**
@@ skipping 109 matching lines @@
      * call to loadChildren.
      * @param {string} path The path to the parent cookie.
      */
     loadCookieChildren: function(path) {},
 
     /**
      * Removes a given cookie.
      * @param {string} path The path to the parent cookie.
      */
     removeCookie: function(path) {},
+
+    /**
+     * Initializes the protocol handler list. List is returned through JS calls
+     * to setHandlersEnabled, setProtocolHandlers & setIgnoredProtocolHandlers.
+     */
+    initializeProtocolHandlerList: function() {},
+
+    /**
+     * Enables or disables the ability for sites to ask to become the default
+     * protocol handlers.
+     * @param {boolean} enabled Whether sites can ask to become default.
+     */
+    setProtocolHandlerDefault: function(enabled) {},
+
+    /**
+     * Sets a certain url as default for a given protocol handler.
+     * @param {string} protocol The protocol to set a default for.
+     * @param {string} url The url to use as the default.
+     */
+    setProtocolDefault: function(protocol, url) {},
+
+    /**
+     * Deletes a certain protocol handler by url.
+     * @param {string} protocol The protocol to delete the url from.
+     * @param {string} url The url to delete.
+     */
+    removeProtocolHandler: function(protocol, url) {},
   };
 
   /**
    * @constructor
    * @implements {settings.SiteSettingsPrefsBrowserProxy}
    */
   function SiteSettingsPrefsBrowserProxyImpl() {}
 
   // The singleton instance_ is replaced with a test version of this wrapper
   // during testing.
@@ skipping 50 matching lines @@
     },
 
     /** @override */
     loadCookieChildren: function(path) {
       chrome.send('loadCookie', [path]);
     },
 
     /** @override */
     removeCookie: function(path) {
       chrome.send('removeCookie', [path]);
-    }
+    },
+
+    initializeProtocolHandlerList: function() {
+      chrome.send('initializeProtocolHandlerList');
+    },
+
+    /** @override */
+    setProtocolHandlerDefault: function(enabled) {
+      chrome.send('setHandlersEnabled', [enabled]);
+    },
+
+    /** @override */
+    setProtocolDefault: function(protocol, url) {
+      chrome.send('setDefault', [[protocol, url]]);
+    },
+
+    /** @override */
+    removeProtocolHandler: function(protocol, url) {
+      chrome.send('removeHandler', [[protocol, url]]);
+    },
   };
 
   return {
     SiteSettingsPrefsBrowserProxy: SiteSettingsPrefsBrowserProxy,
     SiteSettingsPrefsBrowserProxyImpl: SiteSettingsPrefsBrowserProxyImpl,
   };
 });