[Extensions] Use a separate IPC message for extension events

extensions/renderer/extension_frame_helper.h

 // Copyright 2013 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 EXTENSIONS_RENDERER_EXTENSION_FRAME_HELPER_H_
 #define EXTENSIONS_RENDERER_EXTENSION_FRAME_HELPER_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 118 matching lines @@
   void OnExtensionSetTabId(int tab_id);
   void OnUpdateBrowserWindowId(int browser_window_id);
   void OnNotifyRendererViewType(ViewType view_type);
   void OnExtensionResponse(int request_id,
                            bool success,
                            const base::ListValue& response,
                            const std::string& error);
   void OnExtensionMessageInvoke(const std::string& extension_id,
                                 const std::string& module_name,
                                 const std::string& function_name,
-                                const base::ListValue& args,
-                                bool user_gesture);
+                                const base::ListValue& args);
   void OnAssignPortId(int port_id, int request_id);
 
   // Type of view associated with the RenderFrame.
   ViewType view_type_;
 
   // The id of the tab the render frame is attached to.
   int tab_id_;
 
   // The id of the browser window the render frame is attached to.
   int browser_window_id_;
@@ skipping 18 matching lines @@
   bool delayed_main_world_script_initialization_ = false;
 
   base::WeakPtrFactory<ExtensionFrameHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionFrameHelper);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_EXTENSION_FRAME_HELPER_H_