Rename isNormalFlowOnly to something meaningful

Source/core/paint/DeprecatedPaintLayerStackingNode.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 48 matching lines @@
 class LayoutBoxModelObject;
 
 class CORE_EXPORT DeprecatedPaintLayerStackingNode {
     WTF_MAKE_NONCOPYABLE(DeprecatedPaintLayerStackingNode);
 public:
     explicit DeprecatedPaintLayerStackingNode(DeprecatedPaintLayer*);
     ~DeprecatedPaintLayerStackingNode();
 
     int zIndex() const { return layoutObject()->style()->zIndex(); }
 
-    // A stacking context is a layer that has a non-auto z-index.
-    bool isStackingContext() const { return !layoutObject()->style()->hasAutoZIndex(); }
+    bool isStackingContext() const { return layoutObject()->style()->isStackingContext(); }
 
     // Update our normal and z-index lists.
     void updateLayerListsIfNeeded();
 
     bool zOrderListsDirty() const { return m_zOrderListsDirty; }
     void dirtyZOrderLists();
     void updateZOrderLists();
     void clearZOrderLists();
     void dirtyStackingContextZOrderLists();
 
     bool hasPositiveZOrderList() const { return posZOrderList() && posZOrderList()->size(); }
     bool hasNegativeZOrderList() const { return negZOrderList() && negZOrderList()->size(); }
 
     // FIXME: should check for dirtiness here?
-    bool isNormalFlowOnly() const { return m_isNormalFlowOnly; }
-    void updateIsNormalFlowOnly();
+    bool isNormalFlowOnly() const { return !isTreatedAsStackingContextForPainting(); }
+    bool isTreatedAsStackingContextForPainting() const { return m_isTreatedAsStackingContextForPainting; }
+    void updateIsTreatedAsStackingContextForPainting();
     bool normalFlowListDirty() const { return m_normalFlowListDirty; }
     void dirtyNormalFlowList();
 
     void updateStackingNodesAfterStyleChange(const ComputedStyle* oldStyle);
 
     DeprecatedPaintLayerStackingNode* ancestorStackingContextNode() const;
 
     DeprecatedPaintLayer* layer() const { return m_layer; }
 
 #if ENABLE(ASSERT)
@@ skipping 34 matching lines @@
     void collectLayers(OwnPtr<Vector<DeprecatedPaintLayerStackingNode*>>& posZOrderList, OwnPtr<Vector<DeprecatedPaintLayerStackingNode*>>& negZOrderList);
 
 #if ENABLE(ASSERT)
     bool isInStackingParentZOrderLists() const;
     bool isInStackingParentNormalFlowList() const;
     void updateStackingParentForZOrderLists(DeprecatedPaintLayerStackingNode* stackingParent);
     void updateStackingParentForNormalFlowList(DeprecatedPaintLayerStackingNode* stackingParent);
     void setStackingParent(DeprecatedPaintLayerStackingNode* stackingParent) { m_stackingParent = stackingParent; }
 #endif
 
-    bool shouldBeNormalFlowOnly() const;
+    bool shouldBeTreatedAsStackingContextForPainting() const { return layoutObject()->style()->isTreatedAsStackingContextForPainting(); }
 
     void updateNormalFlowList();
 
     bool isDirtyStackingContext() const { return m_zOrderListsDirty && isStackingContext(); }
 
     DeprecatedPaintLayerCompositor* compositor() const;
     // We can't return a LayoutBox as LayoutInline can be a stacking context.
     LayoutBoxModelObject* layoutObject() const;
 
     DeprecatedPaintLayer* m_layer;
 
     // m_posZOrderList holds a sorted list of all the descendant nodes within
     // that have z-indices of 0 or greater (auto will count as 0).
     // m_negZOrderList holds descendants within our stacking context with
     // negative z-indices.
     OwnPtr<Vector<DeprecatedPaintLayerStackingNode*>> m_posZOrderList;
     OwnPtr<Vector<DeprecatedPaintLayerStackingNode*>> m_negZOrderList;
 
     // This list contains child nodes that cannot create stacking contexts.
     OwnPtr<Vector<DeprecatedPaintLayerStackingNode*>> m_normalFlowList;
 
     unsigned m_zOrderListsDirty : 1;
     unsigned m_normalFlowListDirty: 1;
-    unsigned m_isNormalFlowOnly : 1;
+    unsigned m_isTreatedAsStackingContextForPainting : 1;
 
 #if ENABLE(ASSERT)
     unsigned m_layerListMutationAllowed : 1;
     DeprecatedPaintLayerStackingNode* m_stackingParent;
 #endif
 };
 
 inline void DeprecatedPaintLayerStackingNode::clearZOrderLists()
 {
     ASSERT(!isStackingContext());
@@ skipping 37 matching lines @@
 
 private:
     DeprecatedPaintLayerStackingNode* m_stackingNode;
     bool m_previousMutationAllowedState;
 };
 #endif
 
 } // namespace blink
 
 #endif // DeprecatedPaintLayerStackingNode_h