Makes DesktopWindowTreeHostXxx to dispatch key event to InputMethod.

ui/views/win/hwnd_message_handler_delegate.h

Index: ui/views/win/hwnd_message_handler_delegate.h
diff --git a/ui/views/win/hwnd_message_handler_delegate.h b/ui/views/win/hwnd_message_handler_delegate.h
index e773b817701fed13e86e2119b5b40e03560eca4c..6592a890f25866d66b9a1151a18bea197fb1c6a1 100644
--- a/ui/views/win/hwnd_message_handler_delegate.h
+++ b/ui/views/win/hwnd_message_handler_delegate.h
@@ -166,13 +166,9 @@ class VIEWS_EXPORT HWNDMessageHandlerDelegate {
   // handled by the delegate.
   virtual bool HandleMouseEvent(const ui::MouseEvent& event) = 0;
 
-  // Called when a translated key event is received (i.e. post IME translation.)
-  // Returns true if the event was handled by the delegate.
-  virtual bool HandleKeyEvent(const ui::KeyEvent& event) = 0;
-
   // Called when an untranslated key event is received (i.e. pre-IME
-  // translation). Returns true if the event was sent to the input method.
-  virtual bool HandleUntranslatedKeyEvent(const ui::KeyEvent& event) = 0;
+  // translation).
+  virtual void HandleKeyEvent(ui::KeyEvent* event) = 0;
 
   // Called when a touch event is received.
   virtual void HandleTouchEvent(const ui::TouchEvent& event) = 0;