Pass in media message loop to VideoRendererBase and enforce calling on the right thread.

media/tools/player_x11/player_x11.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 <signal.h>
 
 #include <iostream>  // NOLINT
 
 #include "base/at_exit.h"
 #include "base/bind.h"
@@ skipping 100 matching lines @@
   scoped_ptr<media::FilterCollection> collection(
       new media::FilterCollection());
   collection->SetDemuxer(new media::FFmpegDemuxer(message_loop, data_source));
   collection->GetAudioDecoders()->push_back(new media::FFmpegAudioDecoder(
       message_loop));
   collection->GetVideoDecoders()->push_back(new media::FFmpegVideoDecoder(
       message_loop, NULL));
 
   // Create our video renderer and save a reference to it for painting.
   g_video_renderer = new media::VideoRendererBase(
+      message_loop,
       base::Bind(&Paint, paint_message_loop, paint_cb),
       base::Bind(&SetOpaque),
       true);
   collection->AddVideoRenderer(g_video_renderer);
 
   collection->AddAudioRenderer(
       new media::AudioRendererImpl(new media::NullAudioSink()));
 
   // Create the pipeline and start it.
   *pipeline = new media::Pipeline(message_loop, new media::MediaLog());
@@ skipping 166 matching lines @@
   // Release callback which releases video renderer. Do this before cleaning up
   // X below since the video renderer has some X cleanup duties as well.
   paint_cb.Reset();
 
   XDestroyWindow(g_display, g_window);
   XCloseDisplay(g_display);
   g_audio_manager = NULL;
 
   return 0;
 }