MSE: Increase log visibility when unfragmented MP4 causes parse failure

media/formats/mp4/box_reader.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_READER_H_
 #define MEDIA_FORMATS_MP4_BOX_READER_H_
 
 #include <map>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "media/base/media_export.h"
 #include "media/base/media_log.h"
 #include "media/formats/mp4/fourccs.h"
 #include "media/formats/mp4/rcheck.h"
 
 namespace media {
 namespace mp4 {
 
 class BoxReader;
 
 struct MEDIA_EXPORT Box {
   virtual ~Box();
+
+  // Parse errors may be logged using the BoxReader's log callback.
   virtual bool Parse(BoxReader* reader) = 0;
+
   virtual FourCC BoxType() const = 0;
 };
 
 class MEDIA_EXPORT BufferReader {
  public:
   BufferReader(const uint8* buf, const int size)
       : buf_(buf), size_(size), pos_(0) {
     CHECK(buf);
     CHECK_GE(size, 0);
   }
@@ skipping 177 matching lines @@
     pos_ += child_reader.size();
   }
 
   return !err;
 }
 
 }  // namespace mp4
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_MP4_BOX_READER_H_