New thunk system for Pepper proxy and implementation

ppapi/proxy/plugin_resource_tracker.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 PPAPI_PROXY_PLUGIN_RESOURCE_TRACKER_H_
 #define PPAPI_PROXY_PLUGIN_RESOURCE_TRACKER_H_
 
 #include <map>
 #include <utility>
 
 #include "base/memory/linked_ptr.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/proxy/host_resource.h"
+#include "ppapi/shared_impl/tracker_base.h"
 
 template<typename T> struct DefaultSingletonTraits;
 
 namespace pp {
 namespace proxy {
 
 class PluginDispatcher;
 class PluginResource;
 
-class PluginResourceTracker {
+class PluginResourceTracker : public ::ppapi::shared_impl::TrackerBase {
  public:
   // Called by tests that want to specify a specific ResourceTracker. This
   // allows them to use a unique one each time and avoids singletons sticking
   // around across tests.
   static void SetInstanceForTest(PluginResourceTracker* tracker);
 
   // Returns the global singleton resource tracker for the plugin.
   static PluginResourceTracker* GetInstance();
+  static ::ppapi::shared_impl::TrackerBase* GetTrackerBaseInstance();
 
   // Returns the object associated with the given resource ID, or NULL if
   // there isn't one.
   PluginResource* GetResourceObject(PP_Resource pp_resource);
 
   // Adds the given resource object to the tracked list, and returns the
   // plugin-local PP_Resource ID that identifies the resource. Note that this
   // PP_Resource is not valid to send to the host, use
   // PluginResource.host_resource() to get that.
   PP_Resource AddResource(linked_ptr<PluginResource> object);
 
   void AddRefResource(PP_Resource resource);
   void ReleaseResource(PP_Resource resource);
 
   // Given a host resource, maps it to an existing plugin resource ID if it
   // exists, or returns 0 on failure.
   PP_Resource PluginResourceForHostResource(
       const HostResource& resource) const;
 
+  // TrackerBase.
+  virtual ::ppapi::shared_impl::ResourceObjectBase* GetResourceAPI(
+      PP_Resource res);
+  virtual ::ppapi::shared_impl::FunctionGroupBase* GetFunctionAPI(
+      PP_Instance inst,
+      pp::proxy::InterfaceID id);
+
  private:
   friend struct DefaultSingletonTraits<PluginResourceTracker>;
   friend class PluginResourceTrackerTest;
   friend class PluginProxyTest;
 
   PluginResourceTracker();
   ~PluginResourceTracker();
 
   struct ResourceInfo {
     ResourceInfo();
@@ skipping 22 matching lines @@
   // duplicates.
   PP_Resource last_resource_id_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginResourceTracker);
 };
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PROXY_PLUGIN_RESOURCE_TRACKER_H_