MD Settings: make blowing away per-origin data (i.e. cookies) easier

chrome/test/data/webui/settings/test_site_settings_prefs_browser_proxy.js

Index: chrome/test/data/webui/settings/test_site_settings_prefs_browser_proxy.js
diff --git a/chrome/test/data/webui/settings/test_site_settings_prefs_browser_proxy.js b/chrome/test/data/webui/settings/test_site_settings_prefs_browser_proxy.js
index b350452afe04b85c1e882151411ffd68965b4970..49fae5140d66cc2cb45fdde44c7c941c1fb6ae15 100644
--- a/chrome/test/data/webui/settings/test_site_settings_prefs_browser_proxy.js
+++ b/chrome/test/data/webui/settings/test_site_settings_prefs_browser_proxy.js
@@ -53,6 +53,8 @@ var TestSiteSettingsPrefsBrowserProxy = function() {
     'getExceptionList',
     'observeProtocolHandlers',
     'observeProtocolHandlersEnabledState',
+    'reloadCookies',
+    'removeCookie',
     'removeProtocolHandler',
     'removeUsbDevice',
     'removeZoomLevel',
@@ -245,6 +247,16 @@ TestSiteSettingsPrefsBrowserProxy.prototype = {
   },
 
   /** @override */
+  reloadCookies: function() {
+    return Promise.resolve({id: null, children: []});
+  },
+
+  /** @override */
+  removeCookie: function(path) {
+    this.methodCalled('removeCookie', path);
+  },
+
+  /** @override */
   removeZoomLevel: function(host) {
     this.methodCalled('removeZoomLevel', [host]);
   },