Report VideoDecoder status through ReadCB instead of through FilterHost.

content/renderer/media/rtc_video_decoder.cc

 // Copyright (c) 2012 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 "content/renderer/media/rtc_video_decoder.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 89 matching lines @@
     base::AutoLock auto_lock(lock_);
     if (!read_cb_.is_null()) {
       std::swap(read_cb, read_cb_);
     }
   }
 
   if (!read_cb.is_null()) {
     scoped_refptr<media::VideoFrame> video_frame =
         media::VideoFrame::CreateBlackFrame(visible_size_.width(),
                                             visible_size_.height());
-    read_cb.Run(video_frame);
+    read_cb.Run(video_frame, kOk);
   }
 
   VideoDecoder::Flush(callback);
 }
 
 void RTCVideoDecoder::Stop(const base::Closure& callback) {
   if (MessageLoop::current() != message_loop_) {
     message_loop_->PostTask(FROM_HERE,
                             base::Bind(&RTCVideoDecoder::Stop,
                                        this, callback));
@@ skipping 96 matching lines @@
   // Aspect ratio unsupported; DCHECK when there are non-square pixels.
   DCHECK_EQ(frame->GetPixelWidth(), 1u);
   DCHECK_EQ(frame->GetPixelHeight(), 1u);
 
   int y_rows = frame->GetHeight();
   int uv_rows = frame->GetHeight() / 2;  // YV12 format.
   CopyYPlane(frame->GetYPlane(), frame->GetYPitch(), y_rows, video_frame);
   CopyUPlane(frame->GetUPlane(), frame->GetUPitch(), uv_rows, video_frame);
   CopyVPlane(frame->GetVPlane(), frame->GetVPitch(), uv_rows, video_frame);
 
-  read_cb.Run(video_frame);
+  read_cb.Run(video_frame, kOk);
   return true;
 }