Add support for config changes during playback to FFmpegVideoDecoder.

media/filters/ffmpeg_video_decoder.h

Index: media/filters/ffmpeg_video_decoder.h
diff --git a/media/filters/ffmpeg_video_decoder.h b/media/filters/ffmpeg_video_decoder.h
index a48e3b4b841024db0d326e907c7c313ad4aec8fb..b2525a80ba205c400205a97d7e665f90ccc37613 100644
--- a/media/filters/ffmpeg_video_decoder.h
+++ b/media/filters/ffmpeg_video_decoder.h
@@ -80,6 +80,10 @@ class MEDIA_EXPORT FFmpegVideoDecoder : public VideoDecoder {
   bool Decode(const scoped_refptr<DecoderBuffer>& buffer,
               scoped_refptr<VideoFrame>* video_frame);
 
+  // Handles initializing the decoder with a new config.

[Ami GONE FROM CHROMIUM, 2012/08/17 15:16:59]

s/initializing/(re-)initializing/

[Ami GONE FROM CHROMIUM, 2012/08/17 15:16:59]

s/new/(new)/

[acolwell GONE FROM CHROMIUM, 2012/08/20 23:10:12]

Done.

[acolwell GONE FROM CHROMIUM, 2012/08/20 23:10:12]

Done.

+  // Returns true if initialization was successful.
+  bool HandleConfigChange();

[Ami GONE FROM CHROMIUM, 2012/08/17 15:16:59]

Since this handles the initial config as well, 
s/HandleConfigChange/ConfigureDecoder/ 
?

[acolwell GONE FROM CHROMIUM, 2012/08/20 23:10:12]

Done.

+
   // Releases resources associated with |codec_context_| and |av_frame_|
   // and resets them to NULL.
   void ReleaseFFmpegResources();