Add HE AAC support to ISO BMFF.

media/mp4/box_definitions.h

Index: media/mp4/box_definitions.h
diff --git a/media/mp4/box_definitions.h b/media/mp4/box_definitions.h
index 52a0e86b9d18df25b4890fab582164eeddc33d20..0b7e77146f7cc69650e0c008ea7314e734ec8f13 100644
--- a/media/mp4/box_definitions.h
+++ b/media/mp4/box_definitions.h
@@ -11,6 +11,7 @@
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "media/base/media_export.h"
+#include "media/mp4/aac.h"
 #include "media/mp4/avc.h"
 #include "media/mp4/box_reader.h"
 #include "media/mp4/fourccs.h"
@@ -184,6 +185,13 @@ struct VideoSampleEntry : Box {
   AVCDecoderConfigurationRecord avcc;
 };
 
+struct ElementaryStreamDescriptor : Box {
+  DECLARE_BOX_METHODS(ElementaryStreamDescriptor);
+
+  uint8 object_type;
+  AAC aac;
+};
+
 struct AudioSampleEntry : Box {
   DECLARE_BOX_METHODS(AudioSampleEntry);
 
@@ -194,6 +202,7 @@ struct AudioSampleEntry : Box {
   uint32 samplerate;
 
   ProtectionSchemeInfo sinf;
+  ElementaryStreamDescriptor esds;
 };
 
 struct SampleDescription : Box {