Move Liveness from DemuxerStreamProvider to DemuxerStream.

media/filters/decoder_stream.h

Index: media/filters/decoder_stream.h
diff --git a/media/filters/decoder_stream.h b/media/filters/decoder_stream.h
index 28587c573a961c25511222790200c9b658100807..360a4979494b4d0a8aa92b8f16e3a66b23fc89e8 100644
--- a/media/filters/decoder_stream.h
+++ b/media/filters/decoder_stream.h
@@ -60,7 +60,6 @@ class MEDIA_EXPORT DecoderStream {
   // Initializes the DecoderStream and returns the initialization result
   // through |init_cb|. Note that |init_cb| is always called asynchronously.
   void Initialize(DemuxerStream* stream,
-                  bool low_delay,
                   const StatisticsCB& statistics_cb,
                   const InitCB& init_cb);
 
@@ -172,7 +171,6 @@ class MEDIA_EXPORT DecoderStream {
   base::Closure reset_cb_;
 
   DemuxerStream* stream_;
-  bool low_delay_;
 
   scoped_ptr<DecoderSelector<StreamType> > decoder_selector_;