Render inband text tracks in the media pipeline

media/base/media_log_event.h

 // 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.
 
 #ifndef MEDIA_BASE_MEDIA_LOG_EVENT_H_
 #define MEDIA_BASE_MEDIA_LOG_EVENT_H_
 
 #include "base/time/time.h"
 #include "base/values.h"
 
@@ skipping 52 matching lines @@
     //         "height": <integral height of the video>.
     VIDEO_SIZE_SET,
 
     // A property of the pipeline has been set by a filter.
     // These take a single parameter based upon the name of the event and of
     // the appropriate type. e.g. DURATION_SET: "duration" of type TimeDelta.
     DURATION_SET,
     TOTAL_BYTES_SET,
     NETWORK_ACTIVITY_SET,
 
-    // Audio/Video stream playback has ended.
+    // Audio/Video/Text stream playback has ended.
     AUDIO_ENDED,
     VIDEO_ENDED,
+    TEXT_ENDED,
 
     // The audio renderer has been disabled.
     // params: none.
     AUDIO_RENDERER_DISABLED,
 
     // The extents of the sliding buffer have changed.
     // params: "buffer_start": <first buffered byte>.
     //         "buffer_current": <current offset>.
     //         "buffer_end": <last buffered byte>.
     BUFFERED_EXTENTS_CHANGED,
 
     // Errors reported by Media Source Extensions code.
     MEDIA_SOURCE_ERROR,
     // params: "error": Error string describing the error detected.
 
     // A property has changed without any special event occurring.
     PROPERTY_CHANGE,
   };
 
   int32 id;
   Type type;
   base::DictionaryValue params;
   base::TimeTicks time;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_LOG_EVENT_H_