MSE: Record counts of detected MSE audio, video and text tracks

media/formats/mp4/box_definitions.h

 // Copyright 2014 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_FORMATS_MP4_BOX_DEFINITIONS_H_
 #define MEDIA_FORMATS_MP4_BOX_DEFINITIONS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "media/base/decrypt_config.h"
 #include "media/base/media_export.h"
 #include "media/base/media_log.h"
 #include "media/base/video_codecs.h"
 #include "media/formats/mp4/aac.h"
 #include "media/formats/mp4/avc.h"
 #include "media/formats/mp4/box_reader.h"
 #include "media/formats/mp4/fourccs.h"
 
 namespace media {
 namespace mp4 {
 
-enum TrackType {
-  kInvalid = 0,
-  kVideo,
-  kAudio,
-  kHint
-};
+enum TrackType { kInvalid = 0, kVideo, kAudio, kText, kHint };
 
 enum SampleFlags {
   kSampleIsNonSyncSample = 0x10000
 };
 
 #define DECLARE_BOX_METHODS(T) \
   T(); \
   ~T() override; \
   bool Parse(BoxReader* reader) override; \
   FourCC BoxType() const override;
@@ skipping 430 matching lines @@
   std::vector<TrackFragment> tracks;
   std::vector<ProtectionSystemSpecificHeader> pssh;
 };
 
 #undef DECLARE_BOX
 
 }  // namespace mp4
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_MP4_BOX_DEFINITIONS_H_