Getting rid of duplicate includes from media/

media/video/capture/linux/video_capture_device_linux.cc

 // Copyright (c) 2012 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.
 
 #include "media/video/capture/linux/video_capture_device_linux.h"
 
 #if defined(OS_OPENBSD)
 #include <sys/videoio.h>
 #else
 #include <linux/videodev2.h>
 #endif
 
 #include <list>
-#include <string>
 
 #include "base/bind.h"
 #include "base/strings/stringprintf.h"
 #include "media/video/capture/linux/v4l2_capture_delegate.h"
 
 namespace media {
 
 // USB VID and PID are both 4 bytes long.
 static const size_t kVidPidSize = 4;
 
@@ skipping 115 matching lines @@
       return V4L2_CID_POWER_LINE_FREQUENCY_50HZ;
     case kPowerLine60Hz:
       return V4L2_CID_POWER_LINE_FREQUENCY_60HZ;
     default:
       // If we have no idea of the frequency, at least try and set it to AUTO.
       return V4L2_CID_POWER_LINE_FREQUENCY_AUTO;
   }
 }
 
 }  // namespace media