Fix various uninitialized member variables in media code.

media/formats/mp4/mp4_stream_parser.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/mp4/mp4_stream_parser.h"
 
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/logging.h"
 #include "base/time/time.h"
@@ skipping 12 matching lines @@
 namespace mp4 {
 
 // TODO(xhwang): Figure out the init data type appropriately once it's spec'ed.
 static const char kMp4InitDataType[] = "video/mp4";
 
 MP4StreamParser::MP4StreamParser(const std::set<int>& audio_object_types,
                                  bool has_sbr)
     : state_(kWaitingForInit),
       moof_head_(0),
       mdat_tail_(0),
+      highest_end_offset_(0),
       has_audio_(false),
       has_video_(false),
       audio_track_id_(0),
       video_track_id_(0),
       audio_object_types_(audio_object_types),
       has_sbr_(has_sbr),
       is_audio_track_encrypted_(false),
       is_video_track_encrypted_(false) {
 }
 
@@ skipping 583 matching lines @@
       runs.AdvanceSample();
     }
     runs.AdvanceRun();
   }
 
   return true;
 }
 
 }  // namespace mp4
 }  // namespace media