Allows ash accelerators in wrench menu

ash/accelerators/accelerator_dispatcher.h

Index: ash/accelerators/accelerator_dispatcher.h
diff --git a/ash/accelerators/accelerator_dispatcher.h b/ash/accelerators/accelerator_dispatcher.h
index 209b67dcc2ad011902d237c0536b31b2a1fea17e..1d5d75c1d13d5541a674b7404906d748dca5addc 100644
--- a/ash/accelerators/accelerator_dispatcher.h
+++ b/ash/accelerators/accelerator_dispatcher.h
@@ -17,6 +17,8 @@ namespace ash {
 // Wraps a nested dispatcher to which control is passed if no accelerator key
 // has been pressed.
 // TODO(pkotwicz): Port AcceleratorDispatcher to mac.
+// TODO(pkotwicz): Add support for a |nested_dispatcher| which sends
+//  events to a system IME.
 class ASH_EXPORT AcceleratorDispatcher : public MessageLoop::Dispatcher,
                                          public aura::WindowObserver {
  public: