Makes native_widget_types forward declare ui::Cursor.

ui/keyboard/keyboard_controller.cc

 // Copyright (c) 2013 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.
 
 #include "ui/keyboard/keyboard_controller.h"
 
 #include "base/bind.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
+#include "ui/base/cursor/cursor.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/ime/input_method.h"
 #include "ui/base/ime/text_input_client.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/gfx/path.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/skia_util.h"
 #include "ui/keyboard/keyboard_controller_observer.h"
 #include "ui/keyboard/keyboard_controller_proxy.h"
 
@@ skipping 211 matching lines @@
     const ui::InputMethod* input_method) {
   DCHECK_EQ(input_method_, input_method);
   input_method_ = NULL;
 }
 
 bool KeyboardController::WillHideKeyboard() const {
   return weak_factory_.HasWeakPtrs();
 }
 
 }  // namespace keyboard