WindowDeletionObserver   50 ash/wm/workspace/phantom_window_controller_unittest.cc   DISALLOW_COPY_AND_ASSIGN(WindowDeletionObserver);
WindowDeletionObserver  164 ash/wm/workspace/phantom_window_controller_unittest.cc   WindowDeletionObserver target_deletion_observer(
WindowDeletionObserver  166 ash/wm/workspace/phantom_window_controller_unittest.cc   WindowDeletionObserver start_deletion_observer(