Move computation of RenderLayer::isUnclippedDescendant into CompositingPropertyUpdater

Source/core/rendering/RenderLayerStackingNode.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 96 matching lines @@
 #endif
 
     if (m_posZOrderList)
         m_posZOrderList->clear();
     if (m_negZOrderList)
         m_negZOrderList->clear();
     m_zOrderListsDirty = true;
 
     m_descendantsAreContiguousInStackingOrderDirty = true;
 
-    if (!renderer()->documentBeingDestroyed()) {
-        compositor()->setNeedsUpdateCompositingRequirementsState();
+    if (!renderer()->documentBeingDestroyed())
         compositor()->setCompositingLayersNeedRebuild();
-    }
 }
 
 void RenderLayerStackingNode::dirtyStackingContextZOrderLists()
 {
     RenderLayerStackingNode* stackingContextNode = ancestorStackingContextNode();
     if (stackingContextNode)
         stackingContextNode->dirtyZOrderLists();
 
     RenderLayerStackingNode* stackingNode = ancestorStackingNode();
     if (stackingNode && stackingNode != stackingContextNode)
@@ skipping 179 matching lines @@
     bool isStackingContext = this->isStackingContext();
     if (isStackingContext == wasStackingContext && oldVisibility == renderer()->style()->visibility() && oldZIndex == zIndex())
         return;
 
     dirtyStackingContextZOrderLists();
 
     if (isStackingContext)
         dirtyZOrderLists();
     else
         clearZOrderLists();
-
-    compositor()->setNeedsUpdateCompositingRequirementsState();
 }
 
 bool RenderLayerStackingNode::shouldBeNormalFlowOnly() const
 {
     const bool couldBeNormalFlow = renderer()->hasOverflowClip()
         || renderer()->hasReflection()
         || renderer()->hasMask()
         || renderer()->isCanvas()
         || renderer()->isVideo()
         || renderer()->isEmbeddedObject()
@@ skipping 40 matching lines @@
         return ancestor->stackingNode();
     return 0;
 }
 
 RenderLayerModelObject* RenderLayerStackingNode::renderer() const
 {
     return m_layer->renderer();
 }
 
 } // namespace WebCore