[MD settings] move cookie tree management to cookie tree behavior

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 139 matching lines @@
 
     /**
      * Sets a default devices for a given type of media.
      * @param {string} type The type of media to configure.
      * @param {string} defaultValue The id of the media device to set.
      */
     setDefaultCaptureDevice: function(type, defaultValue) {},
 
     /**
      * Reloads all cookies.
-     * @return {!Promise<Array<CookieDataSummaryItem>>} Returns the full cookie

[dschuyler, 2016/10/26 00:18:38]

These were incorrect (may have been accurate at one time). The C++ side
returns an object that has an array/list rather than returning the array
directly.

+     * @return {!Promise<CookieList>} Returns the full cookie
      *     list.
      */
     reloadCookies: function() {},
 
     /**
      * Fetches all children of a given cookie.
      * @param {string} path The path to the parent cookie.
      * @return {!Promise<Array<CookieDataSummaryItem>>} Returns a cookie list
      *     for the given path.
      */
     loadCookieChildren: function(path) {},
 
     /**
      * Removes a given cookie.
      * @param {string} path The path to the parent cookie.
      */
     removeCookie: function(path) {},
 
     /**
      * Removes all cookies.
-     * @return {!Promise<Array<CookieDataSummaryItem>>} Returns the up to date
+     * @return {!Promise<CookieList>} Returns the up to date
      *     cookie list once deletion is complete (empty list).
      */
     removeAllCookies: function() {},
 
     /**
      * Initializes the protocol handler list. List is returned through JS calls
      * to setHandlersEnabled, setProtocolHandlers & setIgnoredProtocolHandlers.
      */
     initializeProtocolHandlerList: function() {},
 
@@ skipping 176 matching lines @@
     removeZoomLevel: function(host) {
       chrome.send('removeZoomLevel', [host]);
     },
   };
 
   return {
     SiteSettingsPrefsBrowserProxy: SiteSettingsPrefsBrowserProxy,
     SiteSettingsPrefsBrowserProxyImpl: SiteSettingsPrefsBrowserProxyImpl,
   };
 });