FBTF: Remove unneeded headers from base/ (part 9)

media/filters/decoder_base.h

 // Copyright (c) 2010 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.
 
 // A base class that provides the plumbing for a decoder filters.
 
 #ifndef MEDIA_FILTERS_DECODER_BASE_H_
 #define MEDIA_FILTERS_DECODER_BASE_H_
 
 #include <deque>
 
 #include "base/callback.h"
-#include "base/lock.h"
 #include "base/stl_util-inl.h"
 #include "base/task.h"
 #include "base/thread.h"
 #include "media/base/buffers.h"
 #include "media/base/callback.h"
 #include "media/base/filters.h"
 #include "media/base/filter_host.h"
 
 namespace media {
 
@@ skipping 278 matching lines @@
     kStopped,
   };
   State state_;
 
   DISALLOW_COPY_AND_ASSIGN(DecoderBase);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_DECODER_BASE_H_