[Do not submit] D3DKMTWaitForVerticalBlankEvent VSync prototype

gpu/ipc/client/command_buffer_proxy_impl.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 GPU_IPC_CLIENT_COMMAND_BUFFER_PROXY_IMPL_H_
 #define GPU_IPC_CLIENT_COMMAND_BUFFER_PROXY_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 138 matching lines @@
       gfx::SwapResult result,
       const gpu::GpuProcessHostedCALayerTreeParamsMac* params_mac)>;
   void SetSwapBuffersCompletionCallback(
       const SwapBuffersCompletionCallback& callback);
 
   using UpdateVSyncParametersCallback =
       base::Callback<void(base::TimeTicks timebase, base::TimeDelta interval)>;
   void SetUpdateVSyncParametersCallback(
       const UpdateVSyncParametersCallback& callback);
 
+  void EnableVSync(bool enabled);
+
   int32_t route_id() const { return route_id_; }
 
   const scoped_refptr<GpuChannelHost>& channel() const { return channel_; }
 
   base::SharedMemoryHandle GetSharedStateHandle() const {
     return shared_state_shm_->handle();
   }
   uint32_t CreateStreamTexture(uint32_t texture_id);
 
  private:
@@ skipping 124 matching lines @@
 
   base::WeakPtr<CommandBufferProxyImpl> weak_this_;
   scoped_refptr<base::SequencedTaskRunner> callback_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(CommandBufferProxyImpl);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_CLIENT_COMMAND_BUFFER_PROXY_IMPL_H_