Use a direct include of utf_string_conversions.h in content/.

content/renderer/media/media_stream_impl.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 "content/renderer/media/media_stream_impl.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/string_number_conversions.h"
 #include "base/stringprintf.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "content/renderer/media/media_stream_dependency_factory.h"
 #include "content/renderer/media/media_stream_dispatcher.h"
 #include "content/renderer/media/media_stream_extra_data.h"
 #include "content/renderer/media/media_stream_source_extra_data.h"
 #include "content/renderer/media/rtc_video_renderer.h"
 #include "content/renderer/media/webrtc_audio_capturer.h"
 #include "content/renderer/media/webrtc_audio_renderer.h"
 #include "content/renderer/media/webrtc_local_audio_renderer.h"
 #include "content/renderer/media/webrtc_uma_histograms.h"
 #include "third_party/WebKit/public/platform/WebMediaConstraints.h"
@@ skipping 603 matching lines @@
   }
 
   for (size_t i = 0; i < video_sources.size(); ++i) {
     video_sources[i].setReadyState(
             WebKit::WebMediaStreamSource::ReadyStateEnded);
     video_sources[i].setExtraData(NULL);
   }
 }
 
 }  // namespace content