RootWindowDestructionObserver  236 ui/views/widget/desktop_aura/desktop_native_widget_aura.cc   DISALLOW_COPY_AND_ASSIGN(RootWindowDestructionObserver);
RootWindowDestructionObserver  423 ui/views/widget/desktop_aura/desktop_native_widget_aura.cc   host_->window()->AddObserver(new RootWindowDestructionObserver(this));
RootWindowDestructionObserver  238 ui/views/widget/desktop_aura/desktop_native_widget_aura.h   friend class RootWindowDestructionObserver;