Move PlatformScreen, PlatformScreenChromium, and Widget to Source/platform

Source/core/platform/ScrollView.h

 /*
  * Copyright (C) 2004, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Holger Hans Peter Freyther
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 11 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ScrollView_h
 #define ScrollView_h
 
 #include "core/platform/ScrollableArea.h"
 #include "core/platform/Scrollbar.h"
-#include "core/platform/Widget.h"
+#include "platform/Widget.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/scroll/ScrollTypes.h"
 
 #include "wtf/HashSet.h"
 
 namespace WebCore {
 
 class HostWindow;
 class Scrollbar;
 
@@ skipping 309 matching lines @@
     ASSERT(!widget || widget->isScrollView());
     return static_cast<const ScrollView*>(widget);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toScrollView(const ScrollView*);
 
 } // namespace WebCore
 
 #endif // ScrollView_h