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

third_party/WebKit/Source/core/paint/PaintLayer.h

Index: third_party/WebKit/Source/core/paint/PaintLayer.h
diff --git a/third_party/WebKit/Source/core/paint/PaintLayer.h b/third_party/WebKit/Source/core/paint/PaintLayer.h
index 59682ee208e3767913d76545ceead099bac6387e..3f844dca27c6e6bcf3078025ace2ac81cd4e7ee6 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayer.h
+++ b/third_party/WebKit/Source/core/paint/PaintLayer.h
@@ -698,6 +698,11 @@ public:
     }
     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;
@@ -758,10 +763,6 @@ private:
     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 removeAncestorOverflowLayer(const PaintLayer* removedLayer);
 
     void updateOrRemoveFilterClients();