Extensions: Send the tab id to platform apps.

chrome/renderer/extensions/dispatcher.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_RENDERER_EXTENSIONS_DISPATCHER_H_
 #define CHROME_RENDERER_EXTENSIONS_DISPATCHER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 125 matching lines @@
 
   // Shared implementation of the various MessageInvoke IPCs.
   void InvokeModuleSystemMethod(
       content::RenderView* render_view,
       const std::string& extension_id,
       const std::string& module_name,
       const std::string& function_name,
       const base::ListValue& args,
       bool user_gesture);
 
+  void ClearPortData(int port_id);
+
  private:
   friend class ::ChromeRenderViewTest;
   FRIEND_TEST_ALL_PREFIXES(RendererPermissionsPolicyDelegateTest,
                            CannotScriptWebstore);
   typedef void (*BindingInstaller)(ModuleSystem* module_system,
                                   v8::Handle<v8::Object> chrome);
 
   // RenderProcessObserver implementation:
   virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void WebKitInitialized() OVERRIDE;
@@ skipping 146 matching lines @@
   // them.
   std::map<std::string, BindingInstaller> lazy_bindings_map_;
 
   // Sends API requests to the extension host.
   scoped_ptr<RequestSender> request_sender_;
 
   // The platforms system font family and size;
   std::string system_font_family_;
   std::string system_font_size_;
 
+  // Mapping of port IDs to tabs. If there is no tab, the value would be -1.
+  std::map<int, int> port_to_tab_id_map_;
+
   DISALLOW_COPY_AND_ASSIGN(Dispatcher);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_DISPATCHER_H_