Remove InputMethodEventHandler.

ui/aura/window_event_dispatcher.h

Index: ui/aura/window_event_dispatcher.h
diff --git a/ui/aura/window_event_dispatcher.h b/ui/aura/window_event_dispatcher.h
index 4ec5804b9d7da69b42f2eae6c641968e41166128..3fdc162424549c116f49b412ccba2c528d5cac69 100644
--- a/ui/aura/window_event_dispatcher.h
+++ b/ui/aura/window_event_dispatcher.h
@@ -120,6 +120,9 @@ class AURA_EXPORT WindowEventDispatcher : public ui::EventProcessor,
   //             observer.
   void OnPostNotifiedWindowDestroying(Window* window);
 
+  // True to skip sending event to the InputMethod.
+  void set_skip_ime(bool skip_ime) { skip_ime_ = skip_ime; }
+
  private:
   FRIEND_TEST_ALL_PREFIXES(WindowEventDispatcherTest,
                            KeepTranslatedEventInRoot);
@@ -238,6 +241,7 @@ class AURA_EXPORT WindowEventDispatcher : public ui::EventProcessor,
                                                  ui::MouseEvent* event);
   ui::EventDispatchDetails PreDispatchTouchEvent(Window* target,
                                                  ui::TouchEvent* event);
+  ui::EventDispatchDetails PreDispatchKeyEvent(ui::KeyEvent* event);
 
   WindowTreeHost* host_;
 
@@ -270,6 +274,8 @@ class AURA_EXPORT WindowEventDispatcher : public ui::EventProcessor,
   // The default EventTargeter for WindowEventDispatcher generated events.
   std::unique_ptr<WindowTargeter> event_targeter_;
 
+  bool skip_ime_;
+
   // Used to schedule reposting an event.
   base::WeakPtrFactory<WindowEventDispatcher> repost_event_factory_;