Remove port lifetime management from renderer

extensions/renderer/dispatcher.h

 // Copyright 2014 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_DISPATCHER_H_
 #define EXTENSIONS_RENDERER_DISPATCHER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 115 matching lines @@
                      const std::string& event_name) const;
 
   // Shared implementation of the various MessageInvoke IPCs.
   void InvokeModuleSystemMethod(content::RenderFrame* render_frame,
                                 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);
-
   // Returns a list of (module name, resource id) pairs for the JS modules to
   // add to the source map.
   static std::vector<std::pair<std::string, int> > GetJsResources();
   static void RegisterNativeHandlers(ModuleSystem* module_system,
                                      ScriptContext* context,
                                      Dispatcher* dispatcher,
                                      RequestSender* request_sender,
                                      V8SchemaRegistry* v8_schema_registry);
 
   bool WasWebRequestUsedBySomeExtensions() const { return webrequest_used_; }
 
  private:
   // The RendererPermissionsPolicyDelegateTest.CannotScriptWebstore test needs
   // to call the OnActivateExtension IPCs.
   friend class ::ChromeRenderViewTest;
   FRIEND_TEST_ALL_PREFIXES(RendererPermissionsPolicyDelegateTest,
                            CannotScriptWebstore);
 
   // RenderThreadObserver implementation:
   bool OnControlMessageReceived(const IPC::Message& message) override;
   void IdleNotification() override;
   void OnRenderProcessShutdown() override;
 
   void OnActivateExtension(const std::string& extension_id);
   void OnCancelSuspend(const std::string& extension_id);
-  void OnDeliverMessage(int target_port_id, const Message& message);
+  void OnDeliverMessage(int target_port_id,
+                        int source_tab_id,
+                        const Message& message);
   void OnDispatchOnConnect(int target_port_id,
                            const std::string& channel_name,
                            const ExtensionMsg_TabConnectionInfo& source,
                            const ExtensionMsg_ExternalConnectionInfo& info,
                            const std::string& tls_channel_id);
   void OnDispatchOnDisconnect(int port_id, const std::string& error_message);
   void OnLoaded(
       const std::vector<ExtensionMsg_Loaded_Params>& loaded_extensions);
   void OnMessageInvoke(const std::string& extension_id,
                        const std::string& module_name,
@@ skipping 113 matching lines @@
   // Cache for the v8 representation of extension API schemas.
   std::unique_ptr<V8SchemaRegistry> v8_schema_registry_;
 
   // Sends API requests to the extension host.
   std::unique_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_;
-
   // It is important for this to come after the ScriptInjectionManager, so that
   // the observer is destroyed before the UserScriptSet.
   ScopedObserver<UserScriptSetManager, UserScriptSetManager::Observer>
       user_script_set_manager_observer_;
 
   // Status of webrequest usage.
   bool webrequest_used_;
 
   // The WebView partition ID associated with this process's storage partition,
   // if this renderer is a WebView guest render process. Otherwise, this will be
   // empty.
   std::string webview_partition_id_;
 
   DISALLOW_COPY_AND_ASSIGN(Dispatcher);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_DISPATCHER_H_