Clear absolute clip rects when transform changes

Source/core/rendering/RenderLayer.h

Index: Source/core/rendering/RenderLayer.h
diff --git a/Source/core/rendering/RenderLayer.h b/Source/core/rendering/RenderLayer.h
index dc02ec312bbde7c89467c3f4bbcc666e399e43bd..3011c0bc73ca783eafdaaecf6b8d2a701473208e 100644
--- a/Source/core/rendering/RenderLayer.h
+++ b/Source/core/rendering/RenderLayer.h
@@ -172,7 +172,7 @@ public:
     bool isPaginated() const { return m_isPaginated; }
     RenderLayer* enclosingPaginationLayer() const { return m_enclosingPaginationLayer; }
 
-    void updateTransform();
+    void updateTransformationMatrix();
     RenderLayer* renderingContextRoot();
 
     const LayoutSize& offsetForInFlowPosition() const { return m_offsetForInFlowPosition; }
@@ -594,6 +594,8 @@ private:
     void dirtyAncestorChainVisibleDescendantStatus();
     void setAncestorChainHasVisibleDescendant();
 
+    void updateTransform(const RenderStyle* oldStyle, RenderStyle* newStyle);
+
     void dirty3DTransformedDescendantStatus();
     // Both updates the status, and returns true if descendants of this have 3d.
     bool update3DTransformedDescendantStatus();