Revert of Plumb decoded video pixel format from GPU process to renderer.

chrome/gpu/arc_gpu_video_decode_accelerator.h

 // Copyright 2016 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 CHROME_GPU_ARC_GPU_VIDEO_DECODE_ACCELERATOR_H_
 #define CHROME_GPU_ARC_GPU_VIDEO_DECODE_ACCELERATOR_H_
 
 #include <list>
 #include <memory>
 #include <queue>
@@ skipping 34 matching lines @@
                   base::ScopedFD dmabuf_fd,
                   int32_t stride) override;
   void UseBuffer(PortType port,
                  uint32_t index,
                  const BufferMetadata& metadata) override;
   void Reset() override;
   void Flush() override;
 
   // Implementation of the VideoDecodeAccelerator::Client interface.
   void ProvidePictureBuffers(uint32_t requested_num_of_buffers,
-                             media::VideoPixelFormat output_format,
                              uint32_t textures_per_buffer,
                              const gfx::Size& dimensions,
                              uint32_t texture_target) override;
   void DismissPictureBuffer(int32_t picture_buffer) override;
   void PictureReady(const media::Picture& picture) override;
   void NotifyEndOfBitstreamBuffer(int32_t bitstream_buffer_id) override;
   void NotifyFlushDone() override;
   void NotifyResetDone() override;
   void NotifyError(media::VideoDecodeAccelerator::Error error) override;
 
@@ skipping 83 matching lines @@
 
   gpu::GpuPreferences gpu_preferences_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcGpuVideoDecodeAccelerator);
 };
 
 }  // namespace arc
 }  // namespace chromeos
 
 #endif  // CHROME_GPU_ARC_GPU_VIDEO_DECODE_ACCELERATOR_H_