Clean up media header include guards

media/cast/sender/vp8_encoder.h

 // Copyright 2014 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_CAST_SENDER_CODECS_VP8_VP8_ENCODER_H_
-#define MEDIA_CAST_SENDER_CODECS_VP8_VP8_ENCODER_H_
+#ifndef MEDIA_CAST_SENDER_VP8_ENCODER_H_
+#define MEDIA_CAST_SENDER_VP8_ENCODER_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/threading/thread_checker.h"
 #include "media/capture/content/feedback_signal_accumulator.h"
 #include "media/cast/cast_config.h"
 #include "media/cast/sender/software_video_encoder.h"
@@ skipping 70 matching lines @@
 
   // The higher the speed, the less CPU usage, and the lower quality.
   int encoding_speed_;
 
   DISALLOW_COPY_AND_ASSIGN(Vp8Encoder);
 };
 
 }  // namespace cast
 }  // namespace media
 
-#endif  // MEDIA_CAST_SENDER_CODECS_VP8_VP8_ENCODER_H_
+#endif  // MEDIA_CAST_SENDER_VP8_ENCODER_H_