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

gpu/ipc/service/gpu_channel_manager.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_SERVICE_GPU_CHANNEL_MANAGER_H_
 #define GPU_IPC_SERVICE_GPU_CHANNEL_MANAGER_H_
 
 #include <stdint.h>
 
 #include <deque>
@@ skipping 21 matching lines @@
 class WaitableEvent;
 }
 
 namespace gl {
 class GLShareGroup;
 }
 
 namespace gpu {
 struct GpuPreferences;
 class PreemptionFlag;
-class SyncPointClient;
 class SyncPointManager;
 struct SyncToken;
 namespace gles2 {
 class FramebufferCompletenessCache;
 class MailboxManager;
 class ProgramCache;
 class ShaderTranslatorCache;
 }
 }
 
@@ skipping 128 matching lines @@
   GpuWatchdogThread* watchdog_;
 
   base::WaitableEvent* shutdown_event_;
 
   scoped_refptr<gl::GLShareGroup> share_group_;
   scoped_refptr<gles2::MailboxManager> mailbox_manager_;
   scoped_refptr<PreemptionFlag> preemption_flag_;
   GpuMemoryManager gpu_memory_manager_;
   // SyncPointManager guaranteed to outlive running MessageLoop.
   SyncPointManager* sync_point_manager_;
-  std::unique_ptr<SyncPointClient> sync_point_client_waiter_;
   std::unique_ptr<gles2::ProgramCache> program_cache_;
   scoped_refptr<gles2::ShaderTranslatorCache> shader_translator_cache_;
   scoped_refptr<gles2::FramebufferCompletenessCache>
       framebuffer_completeness_cache_;
   scoped_refptr<gl::GLSurface> default_offscreen_surface_;
   GpuMemoryBufferFactory* const gpu_memory_buffer_factory_;
   GpuFeatureInfo gpu_feature_info_;
 #if defined(OS_ANDROID)
   // Last time we know the GPU was powered on. Global for tracking across all
   // transport surfaces.
   base::TimeTicks last_gpu_access_time_;
   base::TimeTicks begin_wake_up_time_;
 #endif
 
   // Set during intentional GPU process shutdown.
   bool exiting_for_lost_context_;
 
   // Member variables should appear before the WeakPtrFactory, to ensure
   // that any WeakPtrs to Controller are invalidated before its members
   // variable's destructors are executed, rendering them invalid.
   base::WeakPtrFactory<GpuChannelManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuChannelManager);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_SERVICE_GPU_CHANNEL_MANAGER_H_