Re-land r92885, which was reverted in r92891.

ppapi/proxy/plugin_resource.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_H_
 #define PPAPI_PROXY_PLUGIN_RESOURCE_H_
 
 #include "base/basictypes.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/host_resource.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/shared_impl/resource_object_base.h"
 
 // If you inherit from resource, make sure you add the class name here.
 #define FOR_ALL_PLUGIN_RESOURCES(F)                   \
   F(Audio) \
   F(AudioConfig) \
   F(Broker) \
   F(Buffer) \
   F(Context3D) \
   F(FileChooser) \
   F(FileRef) \
   F(FileSystem) \
   F(FlashMenu) \
   F(FlashNetConnector) \
   F(Font) \
   F(Graphics2D) \
+  F(Graphics3D) \
   F(ImageData) \
   F(MockResource) \
   F(PrivateFontFile) \
   F(Surface3D) \
   F(URLLoader) \
   F(URLRequestInfo)\
   F(URLResponseInfo)
 
 namespace pp {
 namespace proxy {
@@ skipping 49 matching lines @@
   template <> inline Type* PluginResource::Cast<Type>() {  \
       return As##Type();                             \
   }
 FOR_ALL_PLUGIN_RESOURCES(DEFINE_RESOURCE_CAST)
 #undef DEFINE_RESOURCE_CAST
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PROXY_PLUGIN_RESOURCE_H_