Only deliver extension messages to contexts that care.

chrome/renderer/extensions/extension_dispatcher.h

 // Copyright (c) 2011 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_RENDERER_EXTENSIONS_EXTENSION_DISPATCHER_H_
 #define CHROME_RENDERER_EXTENSIONS_EXTENSION_DISPATCHER_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 51 matching lines @@
 
   // RenderProcessObserver implementation:
   virtual bool OnControlMessageReceived(const IPC::Message& message);
   virtual void WebKitInitialized();
   virtual void IdleNotification();
 
   void OnMessageInvoke(const std::string& extension_id,
                        const std::string& function_name,
                        const base::ListValue& args,
                        const GURL& event_url);
+  void OnDeliverMessage(int target_port_id, const std::string& message);
   void OnSetFunctionNames(const std::vector<std::string>& names);
   void OnLoaded(const ExtensionMsg_Loaded_Params& params);
   void OnUnloaded(const std::string& id);
   void OnSetScriptingWhitelist(
       const Extension::ScriptingWhitelist& extension_ids);
   void OnPageActionsUpdated(const std::string& extension_id,
       const std::vector<std::string>& page_actions);
   void OnActivateApplication(const std::string& extension_id);
   void OnActivateExtension(const std::string& extension_id);
   void OnUpdatePermissions(int reason_id,
@@ skipping 42 matching lines @@
   // The applications that are active in this process.
   std::set<std::string> active_application_ids_;
 
   // True once WebKit has been initialized (and it is therefore safe to poke).
   bool is_webkit_initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionDispatcher);
 };
 
 #endif  // CHROME_RENDERER_EXTENSIONS_EXTENSION_DISPATCHER_H_