Pass Client pointer in Initialize() for VDA/VEA

media/video/video_decode_accelerator.h

Index: media/video/video_decode_accelerator.h
diff --git a/media/video/video_decode_accelerator.h b/media/video/video_decode_accelerator.h
index 5212db2c48812bd31d456d2dbf7b65a1447c50ea..be5042ab0505c6e6cb6cd70004f3f373213dd2de 100644
--- a/media/video/video_decode_accelerator.h
+++ b/media/video/video_decode_accelerator.h
@@ -85,10 +85,12 @@ class MEDIA_EXPORT VideoDecodeAccelerator
 
   // Initializes the video decoder with specific configuration.
   // Parameters:
+  //  |client| is the client of this video decoder.  The provided pointer must
+  //  be valid until Destroy() is called.
   //  |profile| is the video stream's format profile.
   //
   // Returns true when command successfully accepted. Otherwise false.
-  virtual bool Initialize(VideoCodecProfile profile) = 0;
+  virtual bool Initialize(Client* client, VideoCodecProfile profile) = 0;
 
   // Decodes given bitstream buffer that contains at most one frame. Once
   // decoder is done with processing |bitstream_buffer| it will call