[MSAN] Initialize video_ and audio_track_id_ in media_unittest.

media/formats/mp2t/mp2t_stream_parser_unittest.cc

 // 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.
 
 #include "media/formats/mp2t/mp2t_stream_parser.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 46 matching lines @@
  public:
   Mp2tStreamParserTest()
       : segment_count_(0),
         config_count_(0),
         audio_frame_count_(0),
         video_frame_count_(0),
         has_video_(true),
         audio_min_dts_(kNoDecodeTimestamp()),
         audio_max_dts_(kNoDecodeTimestamp()),
         video_min_dts_(kNoDecodeTimestamp()),
-        video_max_dts_(kNoDecodeTimestamp()) {
+        video_max_dts_(kNoDecodeTimestamp()),
+        audio_track_id_(0),
+        video_track_id_(0) {
     bool has_sbr = false;
     parser_.reset(new Mp2tStreamParser(has_sbr));
   }
 
  protected:
   std::unique_ptr<Mp2tStreamParser> parser_;
   int segment_count_;
   int config_count_;
   int audio_frame_count_;
   int video_frame_count_;
@@ skipping 239 matching lines @@
   parser_->Flush();
   EXPECT_EQ(audio_frame_count_, 40);
   EXPECT_EQ(video_frame_count_, 0);
   // This stream has no mid-stream configuration change.
   EXPECT_EQ(config_count_, 1);
   EXPECT_EQ(segment_count_, 1);
 }
 
 }  // namespace mp2t
 }  // namespace media