media: Use native DemuxerStream enum types in media mojo interfaces

media/filters/decoder_selector.cc

Index: media/filters/decoder_selector.cc
diff --git a/media/filters/decoder_selector.cc b/media/filters/decoder_selector.cc
index 2ad946458f236bd0d205de6a760bda226cae5759..966a7b607795357f52b0546ce32289427b1f8149 100644
--- a/media/filters/decoder_selector.cc
+++ b/media/filters/decoder_selector.cc
@@ -33,9 +33,8 @@ static bool HasValidStreamConfig(DemuxerStream* stream) {
       return stream->audio_decoder_config().IsValidConfig();
     case DemuxerStream::VIDEO:
       return stream->video_decoder_config().IsValidConfig();
-    case DemuxerStream::UNKNOWN:
     case DemuxerStream::TEXT:
-    case DemuxerStream::NUM_TYPES:
+    case DemuxerStream::UNKNOWN:
       NOTREACHED();
   }
   return false;
@@ -47,9 +46,8 @@ static bool IsStreamEncrypted(DemuxerStream* stream) {
       return stream->audio_decoder_config().is_encrypted();
     case DemuxerStream::VIDEO:
       return stream->video_decoder_config().is_encrypted();
-    case DemuxerStream::UNKNOWN:
     case DemuxerStream::TEXT:
-    case DemuxerStream::NUM_TYPES:
+    case DemuxerStream::UNKNOWN:
       NOTREACHED();
   }
   return false;