Support HLS MPEG2 TS with SAMPLE-AES encryption.

media/formats/mp2t/es_parser.h

Index: media/formats/mp2t/es_parser.h
diff --git a/media/formats/mp2t/es_parser.h b/media/formats/mp2t/es_parser.h
index b22fe5d16983c88610c2f6d9459c31c66d08a97b..c2aeb4c022fbb3d8df25c4568483e52a25c98cb7 100644
--- a/media/formats/mp2t/es_parser.h
+++ b/media/formats/mp2t/es_parser.h
@@ -17,6 +17,7 @@
 
 namespace media {
 
+class DecryptConfig;
 class OffsetByteQueue;
 class StreamParserBuffer;
 
@@ -25,6 +26,7 @@ namespace mp2t {
 class MEDIA_EXPORT EsParser {
  public:
   typedef base::Callback<void(scoped_refptr<StreamParserBuffer>)> EmitBufferCB;
+  typedef base::Callback<const DecryptConfig&()> GetDecryptConfigCB;
 
   EsParser();
   virtual ~EsParser();