Never include ancestorLayer transform when testing for overlap.

Source/core/paint/DeprecatedPaintLayer.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 232 matching lines @@
     LayoutRect physicalBoundingBox(const DeprecatedPaintLayer* ancestorLayer, const LayoutPoint* offsetFromRoot = 0) const;
     LayoutRect physicalBoundingBoxIncludingReflectionAndStackingChildren(const DeprecatedPaintLayer* ancestorLayer, const LayoutPoint& offsetFromRoot) const;
     LayoutRect fragmentsBoundingBox(const DeprecatedPaintLayer* ancestorLayer) const;
 
     LayoutRect boundingBoxForCompositingOverlapTest() const;
 
     // If true, this layer's children are included in its bounds for overlap testing.
     // We can't rely on the children's positions if this layer has a filter that could have moved the children's pixels around.
     bool overlapBoundsIncludeChildren() const { return hasFilter() && layoutObject()->style()->filter().hasFilterThatMovesPixels(); }
 
+    // MaybeIncludeTransformForAncestorLayer means that a transform on |ancestorLayer| may be applied to the bounding box,
+    // in particular if paintsWithTransform() is true.
     enum CalculateBoundsOptions {
-        ApplyBoundsChickenEggHacks,
-        DoNotApplyBoundsChickenEggHacks,
+        MaybeIncludeTransformForAncestorLayer,
+        NeverIncludeTransformForAncestorLayer,
     };
-    LayoutRect boundingBoxForCompositing(const DeprecatedPaintLayer* ancestorLayer = 0, CalculateBoundsOptions = DoNotApplyBoundsChickenEggHacks) const;
+    LayoutRect boundingBoxForCompositing(const DeprecatedPaintLayer* ancestorLayer = 0, CalculateBoundsOptions = MaybeIncludeTransformForAncestorLayer) const;
 
     LayoutUnit staticInlinePosition() const { return m_staticInlinePosition; }
     LayoutUnit staticBlockPosition() const { return m_staticBlockPosition; }
 
     void setStaticInlinePosition(LayoutUnit position) { m_staticInlinePosition = position; }
     void setStaticBlockPosition(LayoutUnit position) { m_staticBlockPosition = position; }
 
     LayoutSize subpixelAccumulation() const;
     void setSubpixelAccumulation(const LayoutSize&);
 
@@ skipping 453 matching lines @@
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLayerTree(const blink::DeprecatedPaintLayer*);
 void showLayerTree(const blink::LayoutObject*);
 #endif
 
 #endif // Layer_h