Add HE AAC support to ISO BMFF.

media/mp4/mp4_stream_parser.h

Index: media/mp4/mp4_stream_parser.h
diff --git a/media/mp4/mp4_stream_parser.h b/media/mp4/mp4_stream_parser.h
index df767b33abbf4c278732241eed2f7bb253a16260..5f6a47ab975157e8c2df2874b204ea2575869cdd 100644
--- a/media/mp4/mp4_stream_parser.h
+++ b/media/mp4/mp4_stream_parser.h
@@ -11,6 +11,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "media/base/media_export.h"
 #include "media/base/stream_parser.h"
+#include "media/mp4/aac.h"
 #include "media/mp4/offset_byte_queue.h"
 #include "media/mp4/track_run_iterator.h"
 
@@ -85,6 +86,7 @@ class MEDIA_EXPORT MP4StreamParser : public StreamParser {
   uint32 audio_track_id_;
   uint32 video_track_id_;
   bool parameter_sets_inserted_;
+  AAC aac_;
 
   // We keep this around to avoid having to go digging through the moov with
   // every frame.