Makes DesktopWindowTreeHostXxx to dispatch key event to InputMethod.

ui/views/widget/desktop_aura/desktop_window_tree_host_win.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WIN_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WIN_H_
 
 #include "ui/aura/window_tree_host.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/desktop_aura/desktop_window_tree_host.h"
@@ skipping 152 matching lines @@
   void HandleEndWMSizeMove() override;
   void HandleMove() override;
   void HandleWorkAreaChanged() override;
   void HandleVisibilityChanging(bool visible) override;
   void HandleVisibilityChanged(bool visible) override;
   void HandleClientSizeChanged(const gfx::Size& new_size) override;
   void HandleFrameChanged() override;
   void HandleNativeFocus(HWND last_focused_window) override;
   void HandleNativeBlur(HWND focused_window) override;
   bool HandleMouseEvent(const ui::MouseEvent& event) override;
-  bool HandleKeyEvent(const ui::KeyEvent& event) override;
-  bool HandleUntranslatedKeyEvent(const ui::KeyEvent& event) override;
+  void HandleKeyEvent(ui::KeyEvent* event) override;
   void HandleTouchEvent(const ui::TouchEvent& event) override;
   bool HandleIMEMessage(UINT message,
                         WPARAM w_param,
                         LPARAM l_param,
                         LRESULT* result) override;
   void HandleInputLanguageChange(DWORD character_set,
                                  HKL input_language_id) override;
   void HandlePaintAccelerated(const gfx::Rect& invalid_rect) override;
   bool HandleTooltipNotify(int w_param,
                            NMHDR* l_param,
@@ skipping 68 matching lines @@
   static bool is_cursor_visible_;
 
   scoped_ptr<aura::client::ScopedTooltipDisabler> tooltip_disabler_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopWindowTreeHostWin);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WIN_H_