Remove PostAttachCallbacks and replace with something more specialized

Source/core/dom/Node.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 75 matching lines @@
 
 const int nodeStyleChangeShift = 14;
 
 enum StyleChangeType {
     NoStyleChange = 0,
     LocalStyleChange = 1 << nodeStyleChangeShift,
     SubtreeStyleChange = 2 << nodeStyleChangeShift,
     NeedsReattachStyleChange = 3 << nodeStyleChangeShift,
 };
 
-// If the style change is from the renderer then we'll call setStyle on the
-// renderer even if the style computed from CSS is identical.
-enum StyleChangeSource {
-    StyleChangeFromCSS,
-    StyleChangeFromRenderer
-};
-
 class NodeRareDataBase {
 public:
     RenderObject* renderer() const { return m_renderer; }
     void setRenderer(RenderObject* renderer) { m_renderer = renderer; }
 
 protected:
     NodeRareDataBase(RenderObject* renderer)
         : m_renderer(renderer)
     { }
 
@@ skipping 237 matching lines @@
     bool needsStyleRecalc() const { return styleChangeType() != NoStyleChange; }
     StyleChangeType styleChangeType() const { return static_cast<StyleChangeType>(m_nodeFlags & StyleChangeMask); }
     bool childNeedsStyleRecalc() const { return getFlag(ChildNeedsStyleRecalcFlag); }
     bool isLink() const { return getFlag(IsLinkFlag); }
     bool isEditingText() const { return isTextNode() && getFlag(HasNameOrIsEditingTextFlag); }
 
     void setHasName(bool f) { ASSERT(!isTextNode()); setFlag(f, HasNameOrIsEditingTextFlag); }
     void setChildNeedsStyleRecalc() { setFlag(ChildNeedsStyleRecalcFlag); }
     void clearChildNeedsStyleRecalc() { clearFlag(ChildNeedsStyleRecalcFlag); }
 
-    void setNeedsStyleRecalc(StyleChangeType, StyleChangeSource = StyleChangeFromCSS);
+    void setNeedsStyleRecalc(StyleChangeType);
     void clearNeedsStyleRecalc();
 
     bool childNeedsDistributionRecalc() const { return getFlag(ChildNeedsDistributionRecalc); }
     void setChildNeedsDistributionRecalc()  { setFlag(ChildNeedsDistributionRecalc); }
     void clearChildNeedsDistributionRecalc()  { clearFlag(ChildNeedsDistributionRecalc); }
     void markAncestorsWithChildNeedsDistributionRecalc();
 
     bool childNeedsStyleInvalidation() const { return getFlag(ChildNeedsStyleInvalidation); }
     void setChildNeedsStyleInvalidation()  { setFlag(ChildNeedsStyleInvalidation); }
     void clearChildNeedsStyleInvalidation()  { clearFlag(ChildNeedsStyleInvalidation); }
     void markAncestorsWithChildNeedsStyleInvalidation();
     bool needsStyleInvalidation() { return getFlag(NeedsStyleInvalidation); }
     void clearNeedsStyleInvalidation() { clearFlag(NeedsStyleInvalidation); }
     void setNeedsStyleInvalidation();
 
     void recalcDistribution();
 
-    bool shouldNotifyRendererWithIdenticalStyles() const { return getFlag(NotifyRendererWithIdenticalStyles); }
+    bool needsLayerUpdate() const { return getFlag(NeedsLayerUpdateFlag); }
+    void setNeedsLayerUpdate() { setFlag(NeedsLayerUpdateFlag); }
+    void clearNeedsLayerUpdate() { clearFlag(NeedsLayerUpdateFlag); }
 
     void setIsLink(bool f);
 
     bool hasScopedHTMLStyleChild() const { return getFlag(HasScopedHTMLStyleChildFlag); }
     void setHasScopedHTMLStyleChild(bool flag) { setFlag(flag, HasScopedHTMLStyleChildFlag); }
 
     bool hasEventTargetData() const { return getFlag(HasEventTargetDataFlag); }
     void setHasEventTargetData(bool flag) { setFlag(flag, HasEventTargetDataFlag); }
 
     bool isV8CollectableDuringMinorGC() const { return getFlag(V8CollectableDuringMinorGCFlag); }
@@ skipping 316 matching lines @@
         // Bit 18 is available
 
         HasSyntheticAttrChildNodesFlag = 1 << 19,
         HasCustomStyleCallbacksFlag = 1 << 20,
         HasScopedHTMLStyleChildFlag = 1 << 21,
         HasEventTargetDataFlag = 1 << 22,
         V8CollectableDuringMinorGCFlag = 1 << 23,
         IsInsertionPointFlag = 1 << 24,
         IsInShadowTreeFlag = 1 << 25,
 
-        NotifyRendererWithIdenticalStyles = 1 << 26,
+        NeedsLayerUpdateFlag = 1 << 26,
 
         CustomElement = 1 << 27,
         CustomElementUpgraded = 1 << 28,
 
         ChildNeedsStyleInvalidation = 1 << 29,
         NeedsStyleInvalidation = 1 << 30,
 
         DefaultNodeFlags = IsFinishedParsingChildrenFlag | ChildNeedsStyleRecalcFlag | NeedsReattachStyleChange
     };
 
@@ skipping 182 matching lines @@
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const WebCore::Node*);
 void showTree(const WebCore::Node*);
 void showNodePath(const WebCore::Node*);
 #endif
 
 #endif