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

content/renderer/android/phone_number_detector.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/android/phone_number_detector.h"
 
 #include <algorithm>
 
 #include "base/string_util.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "content/public/renderer/android_content_detection_prefixes.h"
 #include "net/base/escape.h"
 #include "third_party/libphonenumber/src/phonenumber_api.h"
 #include "third_party/libphonenumber/src/phonenumbers/phonenumbermatch.h"
 #include "third_party/libphonenumber/src/phonenumbers/phonenumbermatcher.h"
 #include "third_party/libphonenumber/src/phonenumbers/region_code.h"
 
 using i18n::phonenumbers::PhoneNumberMatch;
 using i18n::phonenumbers::PhoneNumberMatcher;
 using i18n::phonenumbers::PhoneNumberUtil;
@@ skipping 59 matching lines @@
     *start_pos = UTF8ToUTF16(utf8_input.substr(0, match.start())).length();
     *end_pos = *start_pos + UTF8ToUTF16(match.raw_string()).length();
 
     return true;
   }
 
   return false;
 }
 
 }  // namespace content