Added logging calls to FFmpegDemuxer.

media/base/media_log.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_BASE_MEDIA_LOG_H_
 #define MEDIA_BASE_MEDIA_LOG_H_
 
 #include <sstream>
 #include <string>
 
@@ skipping 50 matching lines @@
   scoped_ptr<MediaLogEvent> CreatePipelineStateChangedEvent(
       Pipeline::State state);
   scoped_ptr<MediaLogEvent> CreatePipelineErrorEvent(PipelineStatus error);
   scoped_ptr<MediaLogEvent> CreateVideoSizeSetEvent(
       size_t width, size_t height);
   scoped_ptr<MediaLogEvent> CreateBufferedExtentsChangedEvent(
       int64 start, int64 current, int64 end);
   scoped_ptr<MediaLogEvent> CreateMediaSourceErrorEvent(
       const std::string& error);
 
+  // Report a property change without an accompanying event.
+  void SetStringProperty(const char* key, const std::string& value);
+  void SetIntegerProperty(const char* key, int value);
+  void SetDoubleProperty(const char* key, double value);
+  void SetBooleanProperty(const char* key, bool value);
+
  protected:
   friend class base::RefCountedThreadSafe<MediaLog>;
   virtual ~MediaLog();
 
  private:
   // A unique (to this process) id for this MediaLog.
   int32 id_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaLog);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_LOG_H_