Avoid creating sync token when only change is new hardware video frame.

media/renderers/mock_gpu_video_accelerator_factories.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 MEDIA_RENDERERS_MOCK_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
 #define MEDIA_RENDERERS_MOCK_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 24 matching lines @@
   MOCK_METHOD0(DoCreateVideoDecodeAccelerator, VideoDecodeAccelerator*());
   MOCK_METHOD0(DoCreateVideoEncodeAccelerator, VideoEncodeAccelerator*());
 
   MOCK_METHOD5(CreateTextures,
                bool(int32_t count,
                     const gfx::Size& size,
                     std::vector<uint32_t>* texture_ids,
                     std::vector<gpu::Mailbox>* texture_mailboxes,
                     uint32_t texture_target));
   MOCK_METHOD1(DeleteTexture, void(uint32_t texture_id));
+  MOCK_METHOD0(CreateSyncToken, gpu::SyncToken());
   MOCK_METHOD1(WaitSyncToken, void(const gpu::SyncToken& sync_token));
   MOCK_METHOD0(GetTaskRunner, scoped_refptr<base::SingleThreadTaskRunner>());
   MOCK_METHOD0(GetVideoDecodeAcceleratorCapabilities,
                VideoDecodeAccelerator::Capabilities());
   MOCK_METHOD0(GetVideoEncodeAcceleratorSupportedProfiles,
                VideoEncodeAccelerator::SupportedProfiles());
 
   std::unique_ptr<gfx::GpuMemoryBuffer> AllocateGpuMemoryBuffer(
       const gfx::Size& size,
       gfx::BufferFormat format,
@@ skipping 36 matching lines @@
   VideoPixelFormat video_frame_output_format_ = PIXEL_FORMAT_I420;
 
   bool fail_to_allocate_gpu_memory_buffer_ = false;
 
   gpu::gles2::GLES2Interface* gles2_;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_RENDERERS_MOCK_GPU_VIDEO_ACCELERATOR_FACTORIES_H_