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

content/common/sandbox_mac_diraccess_unittest.mm

 // 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.
 
 #import <Cocoa/Cocoa.h>
 #include <dirent.h>
 
 extern "C" {
 #include <sandbox.h>
 }
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/strings/sys_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "base/test/multiprocess_test.h"
-#include "base/utf_string_conversions.h"
 #include "content/common/sandbox_mac.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/multiprocess_func_list.h"
 
 namespace {
 
 static const char* kSandboxAccessPathKey = "sandbox_dir";
 static const char* kDeniedSuffix = "_denied";
 
 }  // namespace
@@ skipping 274 matching lines @@
     PLOG(ERROR) << "Sandbox breach: was able to write ("
                 << denied_file2.value()
                 << ")";
     return -1;
   }
 
   return 0;
 }
 
 }  // namespace content