Clean up media header include guards

media/base/fake_text_track_stream.h

 // Copyright 2013 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_FAKE_TEXT_TRACK_STREAM_H_
+#define MEDIA_BASE_FAKE_TEXT_TRACK_STREAM_H_
+
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/demuxer_stream.h"
 #include "media/base/video_decoder_config.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace media {
 
 // Fake implementation of the DemuxerStream.  These are the stream objects
@@ skipping 26 matching lines @@
 
  private:
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   ReadCB read_cb_;
   bool stopping_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeTextTrackStream);
 };
 
 }  // namespace media
+
+#endif  // MEDIA_BASE_FAKE_TEXT_TRACK_STREAM_H_