Pass Client pointer in Initialize() for VDA/VEA

media/video/video_encode_accelerator.h

Index: media/video/video_encode_accelerator.h
diff --git a/media/video/video_encode_accelerator.h b/media/video/video_encode_accelerator.h
index f713d1754562ef5ed55fb88d3b814706e3a10ac3..3cb08c28165c5331ca08e52b90de86e5900cb52b 100644
--- a/media/video/video_encode_accelerator.h
+++ b/media/video/video_encode_accelerator.h
@@ -97,6 +97,8 @@ class MEDIA_EXPORT VideoEncodeAccelerator {
   // Initialize the video encoder with a specific configuration.  Called once
   // per encoder construction.
   // Parameters:
+  //  |client| is the client of this video encoder.  The provided pointer must
+  //  be valid until Destroy() is called.
   //  |input_format| is the frame format of the input stream (as would be
   //  reported by VideoFrame::format() for frames passed to Encode()).
   //  |input_visible_size| is the resolution of the input stream (as would be
@@ -106,7 +108,8 @@ class MEDIA_EXPORT VideoEncodeAccelerator {
   //  |initial_bitrate| is the initial bitrate of the encoded output stream,
   //  in bits per second.
   // TODO(sheu): handle resolution changes.  http://crbug.com/249944
-  virtual void Initialize(media::VideoFrame::Format input_format,
+  virtual void Initialize(Client* client,
+                          VideoFrame::Format input_format,
                           const gfx::Size& input_visible_size,
                           VideoCodecProfile output_profile,
                           uint32 initial_bitrate) = 0;