Log MediaSource parsing errors to the MediaLog so they can appear in chrome:media-internals.

media/webm/webm_tracks_parser.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_WEBM_WEBM_TRACKS_PARSER_H_
 #define MEDIA_WEBM_WEBM_TRACKS_PARSER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
+#include "media/base/media_log.h"
 #include "media/webm/webm_content_encodings_client.h"
 #include "media/webm/webm_parser.h"
 
 namespace media {
 
 // Parser for WebM Tracks element.
 class WebMTracksParser : public WebMParserClient {
  public:
-  explicit WebMTracksParser();
+  explicit WebMTracksParser(const LogCB& log_cb);
   virtual ~WebMTracksParser();
 
   // Parses a WebM Tracks element in |buf|.
   //
   // Returns -1 if the parse fails.
   // Returns 0 if more data is needed.
   // Returns the number of bytes parsed on success.
   int Parse(const uint8* buf, int size);
 
   int64 audio_track_num() const { return audio_track_num_; }
@@ skipping 15 matching lines @@
   virtual bool OnString(int id, const std::string& str) OVERRIDE;
 
   int64 track_type_;
   int64 track_num_;
   scoped_ptr<WebMContentEncodingsClient> track_content_encodings_client_;
 
   int64 audio_track_num_;
   int64 video_track_num_;
   std::string audio_encryption_key_id_;
   std::string video_encryption_key_id_;
+  LogCB log_cb_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMTracksParser);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_WEBM_WEBM_TRACKS_PARSER_H_