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 b365ae674b684283952db5cc66626b266d529676..3bcc38e836e22363e8e7713e317a8b8e245dfff4 100644
--- a/media/formats/mp2t/es_parser.h
+++ b/media/formats/mp2t/es_parser.h
@@ -20,6 +20,7 @@
 
 namespace media {
 
+class DecryptConfig;
 class OffsetByteQueue;
 class StreamParserBuffer;
 
@@ -27,7 +28,8 @@ namespace mp2t {
 
 class MEDIA_EXPORT EsParser {
  public:
-  typedef base::Callback<void(scoped_refptr<StreamParserBuffer>)> EmitBufferCB;
+  using EmitBufferCB = base::Callback<void(scoped_refptr<StreamParserBuffer>)>;
+  using GetDecryptConfigCB = base::Callback<const DecryptConfig*()>;
 
   EsParser();
   virtual ~EsParser();