Refactors ui::internal::InputMethodDelegate.

ui/events/event.h

Index: ui/events/event.h
diff --git a/ui/events/event.h b/ui/events/event.h
index ad95e8ffa2d797340dd0fb646773abc9777932eb..01eba2690cb95a123d2014b9add53dba8e8dffc0 100644
--- a/ui/events/event.h
+++ b/ui/events/event.h
@@ -566,6 +566,10 @@ class EVENTS_EXPORT KeyEvent : public Event {
   // in http://crbug.com/127142#c8, the normalization is necessary.
   void NormalizeFlags();
 
+ protected:
+  // This allows a subclass TranslatedKeyEvent to be a non character event.
+  void set_is_char(bool is_char) { is_char_ = is_char; }
+
  private:
   KeyboardCode key_code_;
 
@@ -596,6 +600,8 @@ class EVENTS_EXPORT TranslatedKeyEvent : public KeyEvent {
   // Used for synthetic events such as a VKEY_PROCESSKEY key event.
   TranslatedKeyEvent(bool is_press, KeyboardCode key_code, int flags);
 
+  explicit TranslatedKeyEvent(const KeyEvent& key_event);
+
   // Changes the type() of the object from ET_TRANSLATED_KEY_* to ET_KEY_* so
   // that RenderWidgetHostViewAura and NativeWidgetAura could handle the event.
   void ConvertToKeyEvent();