Move classses VideoCaptureDeviceClient and VideoCaptureBufferPool to media/capture/video

content/browser/renderer_host/media/gpu_memory_buffer_tracker.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 CONTENT_BROWSER_RENDERER_HOST_MEDIA_GPU_MEMORY_BUFFER_TRACKER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_GPU_MEMORY_BUFFER_TRACKER_H_
 
-#include "content/browser/renderer_host/media/video_capture_buffer_tracker.h"
+#include "media/capture/video/video_capture_buffer_tracker.h"
 
 namespace content {
 
 // Tracker specifics for GpuMemoryBuffer. Owns GpuMemoryBuffers and its
 // associated pixel dimensions.
-class GpuMemoryBufferTracker final : public VideoCaptureBufferTracker {
+class GpuMemoryBufferTracker final : public media::VideoCaptureBufferTracker {
  public:
   GpuMemoryBufferTracker();
   ~GpuMemoryBufferTracker() override;
 
   bool Init(const gfx::Size& dimensions,
             media::VideoPixelFormat format,
             media::VideoPixelStorage storage_type,
             base::Lock* lock) override;
 
-  std::unique_ptr<VideoCaptureBufferHandle> GetBufferHandle() override;
+  std::unique_ptr<media::VideoCaptureBufferHandle> GetBufferHandle() override;
 
   bool ShareToProcess(base::ProcessHandle process_handle,
                       base::SharedMemoryHandle* new_handle) override;
 
   bool ShareToProcess2(int plane,
                        base::ProcessHandle process_handle,
                        gfx::GpuMemoryBufferHandle* new_handle) override;
 
  private:
   friend class GpuMemoryBufferBufferHandle;
 
   // Owned references to GpuMemoryBuffers.
   std::vector<std::unique_ptr<gfx::GpuMemoryBuffer>> gpu_memory_buffers_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_GPU_MEMORY_BUFFER_TRACKER_H_