Transfer media::VideoFrame using mojo shared memory

media/mojo/common/mojo_shared_buffer_video_frame.cc

 // 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.
 
 #include "media/mojo/common/mojo_shared_buffer_video_frame.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 
@@ skipping 126 matching lines @@
     ALLOW_UNUSED_LOCAL(result);
     DCHECK_EQ(result, MOJO_RESULT_OK);
   }
 }
 
 size_t MojoSharedBufferVideoFrame::PlaneOffset(size_t plane) const {
   DCHECK(IsValidPlane(plane, format()));
   return offsets_[plane];
 }
 
+const mojo::SharedBufferHandle& MojoSharedBufferVideoFrame::Handle() const {
+  return shared_buffer_handle_.get();
+}
+
+size_t MojoSharedBufferVideoFrame::MappedSize() const {
+  return shared_buffer_size_;
+}
+
 }  // namespace media