media: Use native DemuxerStream enum types in media mojo interfaces

media/mojo/interfaces/demuxer_stream.mojom

Index: media/mojo/interfaces/demuxer_stream.mojom
diff --git a/media/mojo/interfaces/demuxer_stream.mojom b/media/mojo/interfaces/demuxer_stream.mojom
index 98f3dc7a133771c1ecd67dc2f4f3aa49282cde94..3433ab3335043f74e7997b9713724c2b58e3ebba 100644
--- a/media/mojo/interfaces/demuxer_stream.mojom
+++ b/media/mojo/interfaces/demuxer_stream.mojom
@@ -11,19 +11,12 @@ import "media/mojo/interfaces/media_types.mojom";
 // different applications.
 interface DemuxerStream {
   // See media::DemuxerStream for descriptions.
-  enum Type {
-    UNKNOWN,
-    AUDIO,
-    VIDEO,
-    LAST_TYPE = VIDEO,
-  };
+  [Native]
+  enum Type;
 
   // See media::DemuxerStream for descriptions.
-  enum Status {
-    OK = 0,
-    ABORTED,
-    CONFIG_CHANGED,
-  };
+  [Native]
+  enum Status;
 
   // Initializes the DemuxerStream. Read() can only be called after the callback
   // is received. The returned |pipe| will be used to fill out the data section