media: Use native DemuxerStream enum types in media mojo interfaces

media/base/demuxer_stream.h

Index: media/base/demuxer_stream.h
diff --git a/media/base/demuxer_stream.h b/media/base/demuxer_stream.h
index c90de790abed2ab8c8e0119545b4e1979066bf49..4cf5565f9839921905548c1b58982436b03fcdad 100644
--- a/media/base/demuxer_stream.h
+++ b/media/base/demuxer_stream.h
@@ -24,13 +24,14 @@ class MEDIA_EXPORT DemuxerStream {
     AUDIO,
     VIDEO,
     TEXT,
-    NUM_TYPES,  // Always keep this entry as the last one!
+    TYPE_MAX = TEXT,
   };
 
   enum Liveness {
     LIVENESS_UNKNOWN,
     LIVENESS_RECORDED,
     LIVENESS_LIVE,
+    LIVENESS_MAX = LIVENESS_LIVE,
   };
 
   // Status returned in the Read() callback.
@@ -54,6 +55,7 @@ class MEDIA_EXPORT DemuxerStream {
     kOk,
     kAborted,
     kConfigChanged,
+    STATUS_MAX = kConfigChanged,
   };
 
   // Request a buffer to returned via the provided callback.