Use a direct include of strings headers in webkit/, part 1.

webkit/browser/fileapi/file_system_url.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 "webkit/browser/fileapi/file_system_url.h"
 
 #include <sstream>
 
 #include "base/logging.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "net/base/escape.h"
 #include "webkit/common/fileapi/file_system_types.h"
 #include "webkit/common/fileapi/file_system_util.h"
 
 namespace fileapi {
 
 namespace {
 
 }  // namespace
 
@@ skipping 158 matching lines @@
   if (lhs.origin_ != rhs.origin_)
     return lhs.origin_ < rhs.origin_;
   if (lhs.type_ != rhs.type_)
     return lhs.type_ < rhs.type_;
   if (lhs.filesystem_id_ != rhs.filesystem_id_)
     return lhs.filesystem_id_ < rhs.filesystem_id_;
   return lhs.path_ < rhs.path_;
 }
 
 }  // namespace fileapi