Revert of Transfer media::VideoFrame using mojo shared memory

media/mojo/common/mojo_shared_buffer_video_frame.cc

Index: media/mojo/common/mojo_shared_buffer_video_frame.cc
diff --git a/media/mojo/common/mojo_shared_buffer_video_frame.cc b/media/mojo/common/mojo_shared_buffer_video_frame.cc
index 3fca408b8e58e0c1ff0604507c8003214e142c5b..fa226c26071e167599972d345ad040488a7c8d01 100644
--- a/media/mojo/common/mojo_shared_buffer_video_frame.cc
+++ b/media/mojo/common/mojo_shared_buffer_video_frame.cc
@@ -144,12 +144,4 @@
   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