src/: Update the remaining include paths of string_split.h to its new location.

ui/shell_dialogs/select_file_dialog_win.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 "ui/shell_dialogs/select_file_dialog_win.h"
 
 #include <windows.h>
 #include <commdlg.h>
 #include <shlobj.h>
 
 #include <algorithm>
 #include <set>
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/i18n/case_conversion.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
-#include "base/string_split.h"
+#include "base/strings/string_split.h"
 #include "base/threading/thread.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/metro.h"
 #include "base/win/registry.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/shortcut.h"
 #include "base/win/windows_version.h"
 #include "grit/ui_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 883 matching lines @@
   return return_value;
 }
 
 SelectFileDialog* CreateWinSelectFileDialog(
     SelectFileDialog::Listener* listener,
     SelectFilePolicy* policy) {
   return new SelectFileDialogImpl(listener, policy);
 }
 
 }  // namespace ui