Change MediaFilter::Stop() to accept a callback so that Stop() is asynchronous.

webkit/glue/webmediaplayer_impl.cc

 // Copyright (c) 2010 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 "webkit/glue/webmediaplayer_impl.h"
 
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "media/base/limits.h"
 #include "media/base/media_format.h"
@@ skipping 616 matching lines @@
   DCHECK(MessageLoop::current() == main_loop_);
   if (pipeline_->GetError() == media::PIPELINE_OK) {
     GetClient()->timeChanged();
   }
 }
 
 void WebMediaPlayerImpl::OnPipelineError() {
   DCHECK(MessageLoop::current() == main_loop_);
   switch (pipeline_->GetError()) {
     case media::PIPELINE_OK:
-    case media::PIPELINE_STOPPING:
-      NOTREACHED() << "We shouldn't get called with these non-errors";
-      break;
-
     case media::PIPELINE_ERROR_INITIALIZATION_FAILED:
     case media::PIPELINE_ERROR_REQUIRED_FILTER_MISSING:
     case media::PIPELINE_ERROR_COULD_NOT_RENDER:
     case media::PIPELINE_ERROR_URL_NOT_FOUND:
     case media::PIPELINE_ERROR_NETWORK:
     case media::PIPELINE_ERROR_READ:
     case media::DEMUXER_ERROR_COULD_NOT_OPEN:
     case media::DEMUXER_ERROR_COULD_NOT_PARSE:
     case media::DEMUXER_ERROR_NO_SUPPORTED_STREAMS:
     case media::DEMUXER_ERROR_COULD_NOT_CREATE_THREAD:
@@ skipping 56 matching lines @@
   }
 }
 
 WebKit::WebMediaPlayerClient* WebMediaPlayerImpl::GetClient() {
   DCHECK(MessageLoop::current() == main_loop_);
   DCHECK(client_);
   return client_;
 }
 
 }  // namespace webkit_glue