Introducing gpu::CommandBufferId as a distinct, IdType<...>-based type.

ppapi/thunk/resource_creation_api.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_THUNK_RESOURCE_CREATION_API_H_
 #define PPAPI_THUNK_RESOURCE_CREATION_API_H_
 
 #include <stdint.h>
 
 #include "base/memory/shared_memory.h"
 #include "build/build_config.h"
+#include "gpu/command_buffer/common/command_buffer_id.h"
 #include "ppapi/c/dev/pp_video_dev.h"
 #include "ppapi/c/dev/ppb_file_chooser_dev.h"
 #include "ppapi/c/dev/ppb_truetype_font_dev.h"
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/ppb_audio.h"
 #include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/c/ppb_file_system.h"
 #include "ppapi/c/ppb_graphics_3d.h"
@@ skipping 115 matching lines @@
                                        PP_Bool is_always_opaque) = 0;
   virtual PP_Resource CreateGraphics3D(PP_Instance instance,
                                        PP_Resource share_context,
                                        const int32_t* attrib_list) = 0;
   virtual PP_Resource CreateGraphics3DRaw(
       PP_Instance instance,
       PP_Resource share_context,
       const int32_t* attrib_list,
       gpu::Capabilities* capabilities,
       base::SharedMemoryHandle* shared_state,
-      uint64_t* command_buffer_id) = 0;
+      gpu::CommandBufferId* command_buffer_id) = 0;
   virtual PP_Resource CreateHostResolver(PP_Instance instance) = 0;
   virtual PP_Resource CreateHostResolverPrivate(PP_Instance instance) = 0;
   virtual PP_Resource CreateImageData(PP_Instance instance,
                                       PP_ImageDataFormat format,
                                       const PP_Size* size,
                                       PP_Bool init_to_zero) = 0;
   virtual PP_Resource CreateImageDataSimple(PP_Instance instance,
                                             PP_ImageDataFormat format,
                                             const PP_Size* size,
                                             PP_Bool init_to_zero) = 0;
@@ skipping 46 matching lines @@
       PP_VideoDecoder_Profile profile) = 0;
 #endif  // !defined(OS_NACL)
 
   static const ApiID kApiID = API_ID_RESOURCE_CREATION;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_RESOURCE_CREATION_API_H_