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

gpu/command_buffer/service/gles2_cmd_decoder.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.
 
 // This file contains the GLES2Decoder class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "gpu/command_buffer/common/capabilities.h"
+#include "gpu/command_buffer/common/command_buffer_id.h"
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/service/common_decoder.h"
 #include "gpu/gpu_export.h"
 
 namespace gfx {
 class GLContext;
 class GLSurface;
 class Size;
 }
 
@@ skipping 43 matching lines @@
                             const std::string& shader)> ShaderCacheCallback;
 
 // This class implements the AsyncAPIInterface interface, decoding GLES2
 // commands and calling GL.
 class GPU_EXPORT GLES2Decoder : public base::SupportsWeakPtr<GLES2Decoder>,
                                 public CommonDecoder {
  public:
   typedef error::Error Error;
   typedef base::Callback<void(uint64_t release)> FenceSyncReleaseCallback;
   typedef base::Callback<bool(gpu::CommandBufferNamespace namespace_id,
-                              uint64_t command_buffer_id,
-                              uint64_t release)> WaitFenceSyncCallback;
+                              gpu::CommandBufferId command_buffer_id,
+                              uint64_t release)>
+      WaitFenceSyncCallback;
 
   // The default stencil mask, which has all bits set.  This really should be a
   // GLuint, but we can't #include gl_bindings.h in this file without causing
   // macro redefinitions.
   static const unsigned int kDefaultStencilMask;
 
   // Creates a decoder.
   static GLES2Decoder* Create(ContextGroup* group);
 
   ~GLES2Decoder() override;
@@ skipping 188 matching lines @@
   bool log_commands_;
   bool unsafe_es3_apis_enabled_;
   bool force_shader_name_hashing_for_test_;
   DISALLOW_COPY_AND_ASSIGN(GLES2Decoder);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_