Fix a bunch of IWYU violators that don't include scoped_ptr.h

media/filters/decoder_selector.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_FILTERS_DECODER_SELECTOR_H_
 #define MEDIA_FILTERS_DECODER_SELECTOR_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "build/build_config.h"
 #include "media/base/demuxer_stream.h"
 #include "media/base/pipeline_status.h"
 #include "media/filters/decoder_stream_traits.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
@@ skipping 84 matching lines @@
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(DecoderSelector);
 };
 
 typedef DecoderSelector<DemuxerStream::VIDEO> VideoDecoderSelector;
 typedef DecoderSelector<DemuxerStream::AUDIO> AudioDecoderSelector;
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_DECODER_SELECTOR_H_