Getting rid of duplicate includes from media/

media/audio/alsa/alsa_util.cc

 // Copyright 2013 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/audio/alsa/alsa_util.h"
 
-#include <string>
 
 #include "base/logging.h"
 #include "media/audio/alsa/alsa_wrapper.h"
 
 namespace alsa_util {
 
 static snd_pcm_t* OpenDevice(media::AlsaWrapper* wrapper,
                              const char* device_name,
                              snd_pcm_stream_t type,
                              int channels,
@@ skipping 173 matching lines @@
       else if (strcmp(elem_name, kMicElemName) == 0)
         mic_elem = elem;
     }
   }
 
   // Did not find any Capture handle, use the Mic handle.
   return mic_elem;
 }
 
 }  // namespace alsa_util