Move path functions from file_util to FilePath object.

ui/shell_dialogs/select_file_dialog_win.cc

Index: ui/shell_dialogs/select_file_dialog_win.cc
diff --git a/ui/shell_dialogs/select_file_dialog_win.cc b/ui/shell_dialogs/select_file_dialog_win.cc
index 26aa924010b3f915cdf6954813f523961992a156..b3f31ed839d0bdb5f47514b3c8ef7147bce9da05 100644
--- a/ui/shell_dialogs/select_file_dialog_win.cc
+++ b/ui/shell_dialogs/select_file_dialog_win.cc
@@ -86,7 +86,7 @@ bool CallGetSaveFileName(OPENFILENAME* ofn) {
 bool IsDirectory(const base::FilePath& path) {
   base::PlatformFileInfo file_info;
   return file_util::GetFileInfo(path, &file_info) ?
-      file_info.is_directory : file_util::EndsWithSeparator(path);
+      file_info.is_directory : path.EndsWithSeparator();
 }
 
 // Get the file type description from the registry. This will be "Text Document"