Use a direct include of utf_string_conversions.h in android_webview/, apps/, ash/, base/.

base/file_util.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 "base/file_util.h"
 
 #if defined(OS_WIN)
 #include <io.h>
 #endif
 #include <stdio.h>
 
 #include <fstream>
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/strings/string_piece.h"
-#include "base/utf_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 
 using base::FilePath;
 
 namespace {
 
 const FilePath::CharType kExtensionSeparator = FILE_PATH_LITERAL('.');
 
 // The maximum number of 'uniquified' files we will try to create.
 // This is used when the filename we're trying to download is already in use,
 // so we create a new unique filename by appending " (nnn)" before the
@@ skipping 257 matching lines @@
 // Note: the main logic is in file_util_<platform>.cc
 
 bool FileEnumerator::ShouldSkip(const FilePath& path) {
   FilePath::StringType basename = path.BaseName().value();
   return basename == FILE_PATH_LITERAL(".") ||
          (basename == FILE_PATH_LITERAL("..") &&
           !(INCLUDE_DOT_DOT & file_type_));
 }
 
 }  // namespace