Makes native_widget_types forward declare ui::Cursor.

content/browser/web_contents/aura/image_window_delegate.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 "content/browser/web_contents/aura/image_window_delegate.h"
 
+#include "ui/base/cursor/cursor.h"
 #include "ui/base/hit_test.h"
 #include "ui/compositor/compositor.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 
 namespace content {
 
@@ skipping 74 matching lines @@
 }
 
 void ImageWindowDelegate::GetHitTestMask(gfx::Path* mask) const {
 }
 
 void ImageWindowDelegate::DidRecreateLayer(ui::Layer *old_layer,
                                            ui::Layer *new_layer) {
 }
 
 }  // namespace content