Replace MessageLoopProxy with SingleThreadTaskRunner for media/filters/ + associated code.

content/renderer/media/webmediaplayer_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.

[Ami GONE FROM CHROMIUM, 2013/11/08 16:54:46]

What about content/common/gpu/media ?

[scherkus (not reviewing), 2013/11/08 21:51:39]

I compiled the world and nothing broke. Try bots seem happy too.

Those classes do have MLP-using code that can be updated but I want to leave
content/*/media/* for a future CL.

 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/media/webmediaplayer_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <string>
 #include <vector>
 
@@ skipping 147 matching lines @@
       pending_repaint_(false),
       pending_size_change_(false),
       video_frame_provider_client_(NULL),
       text_track_index_(0) {
   media_log_->AddEvent(
       media_log_->CreateEvent(media::MediaLogEvent::WEBMEDIAPLAYER_CREATED));
 
   pipeline_.reset(new media::Pipeline(media_loop_, media_log_.get()));
 
   // |gpu_factories_| requires that its entry points be called on its
-  // |GetMessageLoop()|.  Since |pipeline_| will own decoders created from the
+  // |GetTaskRunner()|.  Since |pipeline_| will own decoders created from the
   // factories, require that their message loops are identical.
-  DCHECK(!gpu_factories_ || (gpu_factories_->GetMessageLoop() == media_loop_));
+  DCHECK(!gpu_factories_ || (gpu_factories_->GetTaskRunner() == media_loop_));
 
   // Let V8 know we started new thread if we did not do it yet.
   // Made separate task to avoid deletion of player currently being created.
   // Also, delaying GC until after player starts gets rid of starting lag --
   // collection happens in parallel with playing.
   //
   // TODO(enal): remove when we get rid of per-audio-stream thread.
   main_loop_->PostTask(
       FROM_HERE,
       base::Bind(&WebMediaPlayerImpl::IncrementExternallyAllocatedMemory,
@@ skipping 1136 matching lines @@
   // The |current_frame_| wasn't painted, it is being replaced, and we haven't
   // even gotten the chance to request a repaint for it yet. Mark it as dropped.
   TRACE_EVENT0("media", "WebMediaPlayerImpl:frameDropped");
   DVLOG(1) << "Frame dropped before being painted: "
            << current_frame_->GetTimestamp().InSecondsF();
   if (frames_dropped_before_paint_ < kuint32max)
     frames_dropped_before_paint_++;
 }
 
 }  // namespace content