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

chrome/browser/media/webrtc_rtp_dump_writer.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 CHROME_BROWSER_MEDIA_WEBRTC_RTP_DUMP_WRITER_H_
 #define CHROME_BROWSER_MEDIA_WEBRTC_RTP_DUMP_WRITER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "chrome/browser/media/rtp_dump_type.h"
 
 // This class is responsible for creating the compressed RTP header dump file:
 // - Adds the RTP headers to an in-memory buffer.
 // - When the in-memory buffer is full, compresses it, and writes it to the
 //   disk.
 // - Notifies the caller when the on-disk file size reaches the max limit.
@@ skipping 106 matching lines @@
   scoped_ptr<FileThreadWorker> outgoing_file_thread_worker_;
 
   base::ThreadChecker thread_checker_;
 
   base::WeakPtrFactory<WebRtcRtpDumpWriter> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcRtpDumpWriter);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_WEBRTC_RTP_DUMP_WRITER_H_