Switch to AVIO instead of a custom FFmpeg URLProtocol handler.

media/filters/ffmpeg_audio_decoder.cc

Index: media/filters/ffmpeg_audio_decoder.cc
diff --git a/media/filters/ffmpeg_audio_decoder.cc b/media/filters/ffmpeg_audio_decoder.cc
index 32f0208501d11ce9208d35d630698471b531fb15..6b80cb70bd1a604f5a96b001404d5eaa003cb14d 100644
--- a/media/filters/ffmpeg_audio_decoder.cc
+++ b/media/filters/ffmpeg_audio_decoder.cc
@@ -54,7 +54,7 @@ void FFmpegAudioDecoder::Initialize(
     const PipelineStatusCB& status_cb,
     const StatisticsCB& statistics_cb) {
   // Ensure FFmpeg has been initialized
-  FFmpegGlue::GetInstance();
+  FFmpegGlue::InitializeFFmpeg();

[scherkus (not reviewing), 2012/10/02 00:20:56]

do you know why we still need this?

[DaleCurtis, 2012/10/02 01:24:23]

I think it's just a safety check. The unittests need to call it at least once,
but both the audio and video decoder unittests do so.  We can probably remove
it.

 
   if (!message_loop_) {
     message_loop_ = base::ResetAndReturn(&message_loop_factory_cb_).Run();