Move AbsoluteClipRects to the state machine

Source/core/paint/DeprecatedPaintLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. 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>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 347 matching lines @@
 
     bool hadTransform = m_transform;
     if (hasTransform != hadTransform) {
         if (hasTransform)
             m_transform = adoptPtr(new TransformationMatrix);
         else
             m_transform.clear();
 
         // DeprecatedPaintLayers with transforms act as clip rects roots, so clear the cached clip rects here.
         m_clipper.clearClipRectsIncludingDescendants();
-    } else if (hasTransform) {
-        m_clipper.clearClipRectsIncludingDescendants(AbsoluteClipRects);
     }
 
     updateTransformationMatrix();
 
     if (had3DTransform != has3DTransform())
         dirty3DTransformedDescendantStatus();
 }
 
 static DeprecatedPaintLayer* enclosingLayerForContainingBlock(DeprecatedPaintLayer* layer)
 {
@@ skipping 2301 matching lines @@
 
 void showLayerTree(const blink::LayoutObject* layoutObject)
 {
     if (!layoutObject) {
         fprintf(stderr, "Cannot showLayerTree. Root is (nil)\n");
         return;
     }
     showLayerTree(layoutObject->enclosingLayer());
 }
 #endif