Fix RenderObject::repaintRectangle in situations when the render object is not a layer and is squas…

Source/core/rendering/RenderLayer.h

 /*
  * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
@@ skipping 321 matching lines @@
 
     bool hasCompositedMask() const;
     bool hasCompositedClippingMask() const;
     bool needsCompositedScrolling() const { return m_scrollableArea && m_scrollableArea->needsCompositedScrolling(); }
 
     bool clipsCompositingDescendantsWithBorderRadius() const;
 
     RenderLayer* scrollParent() const;
     RenderLayer* clipParent() const;
 
-    // Adjusts the given rect to the coordinate space of the repaint container's GraphicsLayer backing.
-    void mapRectToRepaintBacking(const RenderLayerModelObject* repaintContainer, LayoutRect&) const;
+    // Adjusts the given rect (in the coordinate space of the RenderObject) to the coordinate space of |repaintContainer|'s GraphicsLayer backing.
+    static void mapRectToRepaintBacking(const RenderObject*, const RenderLayerModelObject* repaintContainer, LayoutRect&);
 
     // Computes the bounding repaint rect for |renderObject|, in the coordinate space of |repaintContainer|'s GraphicsLayer backing.
     static LayoutRect computeRepaintRect(const RenderObject*, const RenderLayer* repaintContainer);
 
     bool paintsWithTransparency(PaintBehavior paintBehavior) const
     {
         return isTransparent() && ((paintBehavior & PaintBehaviorFlattenCompositingLayers) || compositingState() != PaintsIntoOwnBacking);
     }
 
     bool paintsWithTransform(PaintBehavior) const;
@@ skipping 371 matching lines @@
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLayerTree(const WebCore::RenderLayer*);
 void showLayerTree(const WebCore::RenderObject*);
 #endif
 
 #endif // RenderLayer_h