Revert r95841 due to failing media_unittests on linux_shared bot.

media/filters/ffmpeg_demuxer.h

 // Copyright (c) 2011 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 107 matching lines @@
   // Used to synchronize access to |buffer_queue_|, |read_queue_|, and
   // |stopped_|. This is so other threads can get access to buffers that have
   // already been demuxed without having the demuxer thread sending the
   // buffers. |lock_| must be acquired before any access to |buffer_queue_|,
   // |read_queue_|, or |stopped_|.
   base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxerStream);
 };
 
-class MEDIA_EXPORT FFmpegDemuxer : public Demuxer, public FFmpegURLProtocol {
+class FFmpegDemuxer : public Demuxer, public FFmpegURLProtocol {
  public:
   explicit FFmpegDemuxer(MessageLoop* message_loop);
   virtual ~FFmpegDemuxer();
 
   // Posts a task to perform additional demuxing.
   virtual void PostDemuxTask();
 
   void Initialize(
       DataSource* data_source, PipelineStatusCallback* callback);
 
@@ skipping 115 matching lines @@
   // starting clock value to match the timestamps in the media file. Default
   // is 0.
   base::TimeDelta start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_FFMPEG_DEMUXER_H_