Set up scroll and clip parents

Source/core/testing/Internals.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * 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.
@@ skipping 206 matching lines @@
     String elementLayerTreeAsText(Element*, unsigned flags, ExceptionState&) const;
     String elementLayerTreeAsText(Element*, ExceptionState&) const;
 
     PassRefPtr<NodeList> paintOrderListBeforePromote(Element*, ExceptionState&);
     PassRefPtr<NodeList> paintOrderListAfterPromote(Element*, ExceptionState&);
 
     bool scrollsWithRespectTo(Element*, Element*, ExceptionState&);
 
     void setNeedsCompositedScrolling(Element*, unsigned value, ExceptionState&);
 
+    bool isScrollParent(Element* child, Element* parent, ExceptionState&);
+    bool isClipParent(Element* child, Element* parent, ExceptionState&);
+
+    PassRefPtr<ClientRect> scrollClip(Element*, ExceptionState&);
+    PassRefPtr<ClientRect> ancestorScrollClip(Element*, ExceptionState&);
+
     String repaintRectsAsText(Document*, ExceptionState&) const;
     String scrollingStateTreeAsText(Document*, ExceptionState&) const;
     String mainThreadScrollingReasons(Document*, ExceptionState&) const;
     PassRefPtr<ClientRectList> nonFastScrollableRects(Document*, ExceptionState&) const;
 
     void garbageCollectDocumentResources(Document*, ExceptionState&) const;
     void evictAllResources() const;
 
     void allowRoundingHacks() const;
 
@@ skipping 70 matching lines @@
     RefPtr<DOMWindow> m_frontendWindow;
     OwnPtr<InspectorFrontendChannelDummy> m_frontendChannel;
     RefPtr<InternalRuntimeFlags> m_runtimeFlags;
     RefPtr<ScrollingCoordinator> m_scrollingCoordinator;
     RefPtr<InternalProfilers> m_profilers;
 };
 
 } // namespace WebCore
 
 #endif