media: Use native DemuxerStream enum types in media mojo interfaces

media/base/stream_parser_buffer.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/base/stream_parser_buffer.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
@@ skipping 117 matching lines @@
 const char* StreamParserBuffer::GetTypeName() const {
   switch (type()) {
     case DemuxerStream::AUDIO:
       return "audio";
     case DemuxerStream::VIDEO:
       return "video";
     case DemuxerStream::TEXT:
       return "text";
     case DemuxerStream::UNKNOWN:
       return "unknown";
-    case DemuxerStream::NUM_TYPES:
-      // Fall-through to NOTREACHED().
-      break;
   }
   NOTREACHED();
   return "";
 }
 
 void StreamParserBuffer::ConvertToSpliceBuffer(
     const BufferQueue& pre_splice_buffers) {
   DCHECK(splice_buffers_.empty());
   DCHECK(duration() > base::TimeDelta())
       << "Only buffers with a valid duration can convert to a splice buffer."
@@ skipping 84 matching lines @@
       std::make_pair(kInfiniteDuration, base::TimeDelta()));
 }
 
 void StreamParserBuffer::set_timestamp(base::TimeDelta timestamp) {
   DecoderBuffer::set_timestamp(timestamp);
   if (preroll_buffer_.get())
     preroll_buffer_->set_timestamp(timestamp);
 }
 
 }  // namespace media