Implement proxy for 3d-related interfaces

ppapi/proxy/plugin_dispatcher.h

 // Copyright (c) 2010 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 PPAPI_PROXY_PLUGIN_DISPATCHER_H_
 #define PPAPI_PROXY_PLUGIN_DISPATCHER_H_
 
 #include <string>
 
+#include "base/hash_tables.h"
 #include "base/process.h"
 #include "base/scoped_ptr.h"
+#include "ppapi/c/pp_rect.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/dispatcher.h"
 
 class MessageLoop;
 
 namespace base {
 class WaitableEvent;
 }
 
 namespace pp {
 namespace proxy {
 
+// Used to keep track of per-instance data.
+struct InstanceData {
+  PP_Rect position;
+};
+
 class PluginDispatcher : public Dispatcher {
  public:
   // Constructor for the plugin side. The init and shutdown functions will be
   // will be automatically called when requested by the renderer side. The
   // module ID will be set upon receipt of the InitializeModule message.
   //
   // You must call Dispatcher::InitWithChannel after the constructor.
   PluginDispatcher(base::ProcessHandle remote_process_handle,
                    GetInterfaceFunc get_interface,
                    InitModuleFunc init_module,
@@ skipping 17 matching lines @@
                              PluginDispatcher* dispatcher);
   static void RemoveForInstance(PP_Instance instance);
   */
 
   // Dispatcher overrides.
   virtual bool IsPlugin() const;
 
   // IPC::Channel::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
+  // Keep track of all active instances to associate data with it, like the
+  // current size.
+  void DidCreateInstance(PP_Instance instance);
+  void DidDestroyInstance(PP_Instance instance);
+
+  // Gets the data for an existing instance, or NULL if the instance id doesn't
+  // correspond to  a known instance.
+  InstanceData* GetInstanceData(PP_Instance instance);
+
  private:
   // IPC message handlers.
   void OnMsgInitializeModule(PP_Module pp_module, bool* result);
   void OnMsgShutdown();
 
   InitModuleFunc init_module_;
   ShutdownModuleFunc shutdown_module_;
 
+  typedef base::hash_map<PP_Instance, InstanceData> InstanceDataMap;
+  InstanceDataMap instance_map_;
+
   DISALLOW_COPY_AND_ASSIGN(PluginDispatcher);
 };
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PROXY_PLUGIN_DISPATCHER_H_