Change ui cursor identifiers to an enum class.

ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc

Index: ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc
diff --git a/ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc b/ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc
index 1258c61c9cd0a16e6739f9f2834e4eed7e920008..ce15da46033bdf43330684f16208843c2d12dd4c 100644
--- a/ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc
+++ b/ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc
@@ -48,13 +48,12 @@ const unsigned int kModifiersMasks[] = {
 X11WholeScreenMoveLoop::X11WholeScreenMoveLoop(X11MoveLoopDelegate* delegate)
     : delegate_(delegate),
       in_move_loop_(false),
-      initial_cursor_(ui::kCursorNull),
+      initial_cursor_(ui::CursorType::CURSOR_NULL),
       should_reset_mouse_flags_(false),
       grab_input_window_(None),
       grabbed_pointer_(false),
       canceled_(false),
-      weak_factory_(this) {
-}
+      weak_factory_(this) {}
 
 X11WholeScreenMoveLoop::~X11WholeScreenMoveLoop() {}