Add a new constructor to KeyEvent.

views/widget/widget_win.h

 // Copyright (c) 2011 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 VIEWS_WIDGET_WIDGET_WIN_H_
 #define VIEWS_WIDGET_WIDGET_WIN_H_
 #pragma once
 
 #include <atlbase.h>
 #include <atlapp.h>
@@ skipping 16 matching lines @@
 class ViewProp;
 }
 
 namespace gfx {
 class CanvasSkia;
 class Rect;
 }
 
 namespace views {
 
+class CurrentMessageWatcher;
 class DefaultThemeProvider;
 class DropTargetWin;
 class FocusSearch;
 class RootView;
 class TooltipManagerWin;
 class Window;
 
 RootView* GetRootViewForHWND(HWND hwnd);
 
 // A Windows message reflected from other windows. This message is sent
@@ skipping 545 matching lines @@
   // A vector used to access views for which we have sent notifications to
   // accessibility clients.  It is used as a circular queue.
   std::vector<View*> accessibility_view_events_;
 
   // The current position of the view events vector.  When incrementing,
   // we always mod this value with the max view events above .
   int accessibility_view_events_index_;
 
   ViewProps props_;
 
+  // Keeps track of the current message.
+  static CurrentMessageWatcher* message_watcher_;
+
   DISALLOW_COPY_AND_ASSIGN(WidgetWin);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_WIDGET_WIDGET_WIN_H_