Fix the extension activity log UI.

chrome/browser/ui/webui/extensions/extension_settings_handler.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_SETTINGS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_SETTINGS_HANDLER_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 115 matching lines @@
 
   // Callback for "allowFileAcces" message.
   void HandleAllowFileAccessMessage(const base::ListValue* args);
 
   // Callback for "uninstall" message.
   void HandleUninstallMessage(const base::ListValue* args);
 
   // Callback for "options" message.
   void HandleOptionsMessage(const base::ListValue* args);
 
+  // Callback for "activity" message.
+  void HandleActivityMessage(const base::ListValue* args);
+
   // Callback for "showButton" message.
   void HandleShowButtonMessage(const base::ListValue* args);
 
   // Callback for "autoupdate" message.
   void HandleAutoUpdateMessage(const base::ListValue* args);
 
   // Callback for "loadUnpackedExtension" message.
   void HandleLoadUnpackedExtensionMessage(const base::ListValue* args);
 
   // Utility for calling JavaScript window.alert in the page.
@@ skipping 59 matching lines @@
   bool registered_for_notifications_;
 
   content::NotificationRegistrar registrar_;
 
   PrefChangeRegistrar pref_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionSettingsHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_SETTINGS_HANDLER_H_