Avoid unnecessary post task during frame delivery.

media/filters/ffmpeg_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 "media/filters/ffmpeg_video_decoder.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 176 matching lines @@
   FFmpegGlue::InitializeFFmpeg();
   config_ = config;
 
   // TODO(xhwang): Only set |config_| after we successfully configure the
   // decoder.
   if (!ConfigureDecoder(low_delay)) {
     bound_init_cb.Run(false);
     return;
   }
 
-  output_cb_ = BindToCurrentLoop(output_cb);
+  output_cb_ = output_cb;
 
   // Success!
   state_ = kNormal;
   bound_init_cb.Run(true);
 }
 
 void FFmpegVideoDecoder::Decode(const scoped_refptr<DecoderBuffer>& buffer,
                                 const DecodeCB& decode_cb) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(buffer.get());
@@ skipping 166 matching lines @@
   if (!codec || avcodec_open2(codec_context_.get(), codec, NULL) < 0) {
     ReleaseFFmpegResources();
     return false;
   }
 
   av_frame_.reset(av_frame_alloc());
   return true;
 }
 
 }  // namespace media