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 53e6b6790decb30b4218ee5cd768a79604a86b40..7cb3453d4b6ea2f667074ab00156c5a016c45021 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 +185,12 @@ struct VideoSampleEntry : Box {
   AVCDecoderConfigurationRecord avcc;
 };
 
+struct ElementaryStreamDescriptor : Box {
+  DECLARE_BOX_METHODS(ElementaryStreamDescriptor);
+
+  AAC aac;
+};
+
 struct AudioSampleEntry : Box {
   DECLARE_BOX_METHODS(AudioSampleEntry);
 
@@ -194,6 +201,7 @@ struct AudioSampleEntry : Box {
   uint32 samplerate;
 
   ProtectionSchemeInfo sinf;
+  ElementaryStreamDescriptor esds;
 };
 
 struct SampleDescription : Box {