Use counters for opacity with transform-style:preserve-3d

third_party/WebKit/Source/core/paint/PaintLayer.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 664 matching lines @@
 
     ClipRectsCache* clipRectsCache() const { return m_clipRectsCache.get(); }
     ClipRectsCache& ensureClipRectsCache() const
     {
         if (!m_clipRectsCache)
             m_clipRectsCache = adoptPtr(new ClipRectsCache);
         return *m_clipRectsCache;
     }
     void clearClipRectsCache() const { m_clipRectsCache.clear(); }
 
+    void dirty3DTransformedDescendantStatus();
+    // Both updates the status, and returns true if descendants of this have 3d.
+    bool update3DTransformedDescendantStatus();
+    bool has3DTransformedDescendant() const { DCHECK(!m_3DTransformedDescendantStatusDirty); return m_has3DTransformedDescendant; }
+
 private:
     // Bounding box in the coordinates of this layer.
     LayoutRect logicalBoundingBox() const;
 
     bool hasOverflowControls() const;
 
     void dirtyAncestorChainHasSelfPaintingLayerDescendantStatus();
 
     // Returns true if the position changed.
     bool updateLayerPosition();
@@ skipping 43 matching lines @@
     // FIXME: We could lazily allocate our ScrollableArea based on style properties ('overflow', ...)
     // but for now, we are always allocating it for LayoutBox as it's safer. crbug.com/467721.
     bool requiresScrollableArea() const { return layoutBox(); }
     void updateScrollableArea();
 
     void dirtyAncestorChainVisibleDescendantStatus();
 
     bool attemptDirectCompositingUpdate(StyleDifference, const ComputedStyle* oldStyle);
     void updateTransform(const ComputedStyle* oldStyle, const ComputedStyle& newStyle);
 
-    void dirty3DTransformedDescendantStatus();
-    // Both updates the status, and returns true if descendants of this have 3d.
-    bool update3DTransformedDescendantStatus();
-
     void updateOrRemoveFilterClients();
 
     void updatePaginationRecursive(bool needsPaginationUpdate = false);
     void clearPaginationRecursive();
 
     void markCompositingContainerChainForNeedsRepaint();
 
     PaintLayerRareData& ensureRareData()
     {
         if (!m_rareData)
@@ skipping 109 matching lines @@
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLayerTree(const blink::PaintLayer*);
 void showLayerTree(const blink::LayoutObject*);
 #endif
 
 #endif // Layer_h