Implemented new fence syncs which replaces the old sync points.

components/mus/gles2/command_buffer_local.h

 // Copyright 2015 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 COMPONENTS_MUS_GLES2_COMMAND_BUFFER_LOCAL_H_
 #define COMPONENTS_MUS_GLES2_COMMAND_BUFFER_LOCAL_H_
 
 #include <map>
 
 #include "base/macros.h"
@@ skipping 55 matching lines @@
   void RetireSyncPoint(uint32 sync_point) override;
   void SignalSyncPoint(uint32 sync_point,
                        const base::Closure& callback) override;
   void SignalQuery(uint32 query, const base::Closure& callback) override;
   void SetSurfaceVisible(bool visible) override;
   uint32 CreateStreamTexture(uint32 texture_id) override;
   void SetLock(base::Lock*) override;
   bool IsGpuChannelLost() override;
   gpu::CommandBufferNamespace GetNamespaceID() const override;
   uint64_t GetCommandBufferID() const override;
+  uint32_t GenerateFenceSyncRelease() override;
+  bool IsFenceSyncRelease(uint32_t release) override;
+  bool IsFenceSyncFlushed(uint32_t release) override;
 
  private:
   void PumpCommands();
 
   void OnResize(gfx::Size size, float scale_factor);
   void OnUpdateVSyncParameters(const base::TimeTicks timebase,
                                const base::TimeDelta interval);
   bool OnWaitSyncPoint(uint32_t sync_point);
   void OnParseError();
   void OnContextLost(uint32_t reason);
   void OnSyncPointRetired();
 
   gfx::AcceleratedWidget widget_;
   scoped_refptr<GpuState> gpu_state_;
   scoped_ptr<gpu::CommandBufferService> command_buffer_;
   scoped_ptr<gpu::GpuScheduler> scheduler_;
   scoped_ptr<gpu::gles2::GLES2Decoder> decoder_;
   scoped_refptr<gfx::GLContext> context_;
   scoped_refptr<gfx::GLSurface> surface_;
   CommandBufferLocalClient* client_;
 
+  uint32_t next_fence_sync_release_;
+
   base::WeakPtrFactory<CommandBufferLocal> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CommandBufferLocal);
 };
 
 }  //  namespace mus
 
 #endif  // COMPONENTS_MUS_GLES2_COMMAND_BUFFER_LOCAL_H_