More Aura fixes to build with chromeos==1

chrome/browser/ui/views/handle_web_keyboard_event_aura.cc

 // 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 CHROME_BROWSER_UI_VIEWS_HANDLE_WEB_KEYBOARD_EVENT_GTK_H_
-#define CHROME_BROWSER_UI_VIEWS_HANDLE_WEB_KEYBOARD_EVENT_GTK_H_
-#pragma once
+#include "chrome/browser/ui/views/handle_web_keyboard_event.h"
 
-namespace views {
-class Widget;
-}
-
-struct NativeWebKeyboardEvent;
+#include "views/widget/widget.h"
 
 void HandleWebKeyboardEvent(views::Widget* widget,
-                            const NativeWebKeyboardEvent& event);
-
-#endif  // CHROME_BROWSER_UI_VIEWS_HANDLE_WEB_KEYBOARD_EVENT_GTK_H_
+                            const NativeWebKeyboardEvent& event) {
+  // TODO(saintlou): Handle event forwarding in Aura: crbug.com/99861.
+  NOTIMPLEMENTED();
+}