Replace size_t with int in a few media classes.

media/filters/ffmpeg_demuxer.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.
 
 // Implements the Demuxer interface using FFmpeg's libavformat.  At this time
 // will support demuxing any audio/video format thrown at it.  The streams
 // output mime types audio/x-ffmpeg and video/x-ffmpeg and include an integer
 // key FFmpegCodecID which contains the CodecID enumeration value.  The CodecIDs
 // can be used to create and initialize the corresponding FFmpeg decoder.
 //
@@ skipping 181 matching lines @@
   // the tasks if there is no work to do.
   //
   // Must be called on the demuxer thread.
   bool StreamsHavePendingReads();
 
   // Signal all FFmpegDemuxerStream that the stream has ended.
   //
   // Must be called on the demuxer thread.
   void StreamHasEnded();
 
-  // Read callback method to be passed to DataSource. When the asynchronous
-  // read has completed, this method will be called from DataSource with
-  // number of bytes read or kDataSource in case of error.
-  void OnReadCompleted(size_t size);
+  // Wait for asynchronous read to complete and return number of bytes read.
+  virtual int WaitForRead();
 
-  // Wait for asynchronous read to complete and return number of bytes read.
-  virtual size_t WaitForRead();
-
-  // Signal that read has completed, and |size| bytes have been read.
-  virtual void SignalReadCompleted(size_t size);
+  // Signal the blocked thread that the read has completed, with |size| bytes
+  // read or kReadError in case of error.
+  virtual void SignalReadCompleted(int size);
 
   MessageLoop* message_loop_;
 
   // True if the media is a local resource, false if the media require network
   // access to be loaded.
   bool local_source_;
 
   // FFmpeg context handle.
   AVFormatContext* format_context_;
 
@@ skipping 15 matching lines @@
 
   // This member is used to block on read method calls from FFmpeg and wait
   // until the asynchronous reads in the data source to complete. It is also
   // signaled when the demuxer is being stopped.
   base::WaitableEvent read_event_;
 
   // Flag to indicate if read has ever failed. Once set to true, it will
   // never be reset. This flag is set true and accessed in Read().
   bool read_has_failed_;
 
-  size_t last_read_bytes_;
+  int last_read_bytes_;
   int64 read_position_;
 
   // Initialization can happen before set_host() is called, in which case we
   // store these bits for deferred reporting to the DemuxerHost when we get one.
   base::TimeDelta max_duration_;
   PipelineStatus deferred_status_;
 
   // Used to skip the implicit "first seek" to avoid resetting FFmpeg's internal
   // state.
   bool first_seek_hack_;
 
   // The first timestamp of the opened media file. This is used to set the
   // starting clock value to match the timestamps in the media file. Default
   // is 0.
   base::TimeDelta start_time_;
 
   // Whether audio has been disabled for this demuxer (in which case this class
   // drops packets destined for AUDIO demuxer streams on the floor).
   bool audio_disabled_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_FFMPEG_DEMUXER_H_