Reland [Mojo Video Capture] Simplify media::VideoCaptureDevice::Client:Buffer to a struct

media/capture/video/video_capture_buffer_pool_impl.h

 // Copyright (c) 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_CAPTURE_VIDEO_VIDEO_CAPTURE_BUFFER_POOL_IMPL_H_
 #define MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_BUFFER_POOL_IMPL_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 17 matching lines @@
 namespace media {
 
 class CAPTURE_EXPORT VideoCaptureBufferPoolImpl
     : public VideoCaptureBufferPool {
  public:
   explicit VideoCaptureBufferPoolImpl(
       std::unique_ptr<VideoCaptureBufferTrackerFactory> buffer_tracker_factory,
       int count);
 
   // VideoCaptureBufferPool implementation.
-  mojo::ScopedSharedBufferHandle GetHandleForTransit(int buffer_id) override;
-  std::unique_ptr<VideoCaptureBufferHandle> GetBufferHandle(
+  mojo::ScopedSharedBufferHandle GetHandleForInterProcessTransit(
+      int buffer_id) override;
+  base::SharedMemoryHandle GetNonOwnedSharedMemoryHandleForLegacyIPC(
+      int buffer_id) override;
+  std::unique_ptr<VideoCaptureBufferHandle> GetHandleForInProcessAccess(
       int buffer_id) override;
   int ReserveForProducer(const gfx::Size& dimensions,
                          media::VideoPixelFormat format,
                          media::VideoPixelStorage storage,
                          int frame_feedback_id,
                          int* buffer_id_to_drop) override;
   void RelinquishProducerReservation(int buffer_id) override;
   int ResurrectLastForProducer(const gfx::Size& dimensions,
                                media::VideoPixelFormat format,
                                media::VideoPixelStorage storage) override;
@@ skipping 31 matching lines @@
 
   const std::unique_ptr<VideoCaptureBufferTrackerFactory>
       buffer_tracker_factory_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureBufferPoolImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_BUFFER_POOL_IMPL_H_