Allow paint invalidation containers to cross frame boundaries. (re-land #2)

Source/core/rendering/RenderObject.h

Index: Source/core/rendering/RenderObject.h
diff --git a/Source/core/rendering/RenderObject.h b/Source/core/rendering/RenderObject.h
index 2b89657d73469844fa1a72d6a250c9fdd54ca387..e805d43be4b4eaf4bd1c0bc5a11ad67a181956a2 100644
--- a/Source/core/rendering/RenderObject.h
+++ b/Source/core/rendering/RenderObject.h
@@ -890,10 +890,7 @@ public:
 
     // Returns the rect that should have paint invalidated whenever this object changes. The rect is in the view's
     // coordinate space. This method deals with outlines and overflow.
-    LayoutRect absoluteClippedOverflowRect() const
-    {
-        return clippedOverflowRectForPaintInvalidation(0);
-    }
+    LayoutRect absoluteClippedOverflowRect() const;
     IntRect pixelSnappedAbsoluteClippedOverflowRect() const;
     virtual LayoutRect clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* = 0) const;
     virtual LayoutRect rectWithOutlineForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, LayoutUnit outlineWidth, const PaintInvalidationState* = 0) const;