gpu: Allow waiting on sync tokens without sync token client.

gpu/ipc/in_process_command_buffer.h

 // Copyright 2013 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_IN_PROCESS_COMMAND_BUFFER_H_
 #define GPU_IPC_IN_PROCESS_COMMAND_BUFFER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 219 matching lines @@
   bool DestroyOnGpuThread();
   void FlushOnGpuThread(int32_t put_offset);
   void UpdateLastStateOnGpuThread();
   void ScheduleDelayedWorkOnGpuThread();
   bool MakeCurrent();
   base::Closure WrapCallback(const base::Closure& callback);
   void QueueTask(bool out_of_order, const base::Closure& task);
   void ProcessTasksOnGpuThread();
   void CheckSequencedThread();
   void FenceSyncReleaseOnGpuThread(uint64_t release);
-  bool WaitFenceSyncOnGpuThread(gpu::CommandBufferNamespace namespace_id,
-                                gpu::CommandBufferId command_buffer_id,
-                                uint64_t release);
-  void OnWaitFenceSyncCompleted(CommandBufferNamespace namespace_id,
-                                CommandBufferId command_buffer_id,
-                                uint64_t release);
+  bool WaitSyncTokenOnGpuThread(const SyncToken& sync_token);
+  void OnWaitSyncTokenCompleted(const SyncToken& sync_token);
   void DescheduleUntilFinishedOnGpuThread();
   void RescheduleAfterFinishedOnGpuThread();
   void SignalSyncTokenOnGpuThread(const SyncToken& sync_token,
                                   const base::Closure& callback);
   void SignalQueryOnGpuThread(unsigned query_id, const base::Closure& callback);
   void DestroyTransferBufferOnGpuThread(int32_t id);
   void CreateImageOnGpuThread(int32_t id,
                               const gfx::GpuMemoryBufferHandle& handle,
                               const gfx::Size& size,
                               gfx::BufferFormat format,
@@ skipping 75 matching lines @@
   base::WeakPtr<InProcessCommandBuffer> gpu_thread_weak_ptr_;
   base::WeakPtrFactory<InProcessCommandBuffer> client_thread_weak_ptr_factory_;
   base::WeakPtrFactory<InProcessCommandBuffer> gpu_thread_weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessCommandBuffer);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_IN_PROCESS_COMMAND_BUFFER_H_