Migrate Graphics2D to new design.

ppapi/host/ppapi_host.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 PPAPI_HOST_PPAPI_HOST_H_
 #define PPAPI_HOST_PPAPI_HOST_H_
 
 #include <map>
+#include <set>
 
 #include "base/compiler_specific.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/observer_list.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
@@ skipping 38 matching lines @@
                  const IPC::Message& msg);
 
   // Adds the given host factory filter to the host. The PpapiHost will take
   // ownership of the pointer.
   void AddHostFactoryFilter(scoped_ptr<HostFactory> filter);
 
   // Adds the given message filter to the host. The PpapiHost will take
   // ownership of the pointer.
   void AddInstanceMessageFilter(scoped_ptr<InstanceMessageFilter> filter);
 
+  // Returns null if the resource doesn't exist.
+  host::ResourceHost* GetResourceHost(PP_Resource resource) const;
+
+  // Returns true if the resource is a known Graphics2D resource.
+  bool IsGraphics2DResource(PP_Resource resource) const;
+
  private:
   friend class InstanceMessageFilter;
 
+  template <typename Container, typename Element>
+  static void ReleaseResource(Container container, Element element);
+
   // Message handlers.
   void OnHostMsgResourceCall(const proxy::ResourceMessageCallParams& params,
                              const IPC::Message& nested_msg);
   void OnHostMsgResourceCreated(const proxy::ResourceMessageCallParams& param,
                                 PP_Instance instance,
                                 const IPC::Message& nested_msg);
   void OnHostMsgResourceDestroyed(PP_Resource resource);
 
-  // Returns null if the resource doesn't exist.
-  host::ResourceHost* GetResourceHost(PP_Resource resource);
-
   // Non-owning pointer.
   IPC::Sender* sender_;
 
   PpapiPermissions permissions_;
 
   // Filters for resource creation messages. Note that since we don't support
   // deleting these dynamically we don't need to worry about modifications
   // during iteration. If we add that capability, this should be replaced with
   // an ObserverList.
   ScopedVector<HostFactory> host_factory_filters_;
 
   // Filters for instance messages. Note that since we don't support deleting
   // these dynamically we don't need to worry about modifications during
   // iteration. If we add that capability, this should be replaced with an
   // ObserverList.
   ScopedVector<InstanceMessageFilter> instance_message_filters_;
 
   typedef std::map<PP_Resource, linked_ptr<ResourceHost> > ResourceMap;
   ResourceMap resources_;
 
+  // This set is used to identify Graphics2D resource.
+  typedef std::set<PP_Resource> Graphics2DSet;
+  Graphics2DSet graphics_2d_set_;
+
   DISALLOW_COPY_AND_ASSIGN(PpapiHost);
 };
 
 }  // namespace host
 }  // namespace ppapi
 
 #endif  // PPAPI_HOST_PPAPIE_HOST_H_