Add a fast-path for independent inherited properties

third_party/WebKit/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) 2004-2011, 2014 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 819 matching lines @@
 
     AttachContext context;
     context.performingReattach = true;
 
     detachLayoutTree(context);
     markAncestorsWithChildNeedsStyleRecalc();
 }
 
 inline bool Node::shouldCallRecalcStyle(StyleRecalcChange change)
 {
-    return change >= Inherit || needsStyleRecalc() || childNeedsStyleRecalc();
+    return change >= IndependentInherit || needsStyleRecalc() || childNeedsStyleRecalc();
 }
 
 inline bool isTreeScopeRoot(const Node* node)
 {
     return !node || node->isDocumentNode() || node->isShadowRoot();
 }
 
 inline bool isTreeScopeRoot(const Node& node)
 {
     return node.isDocumentNode() || node.isShadowRoot();
@@ skipping 31 matching lines @@
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const blink::Node*);
 void showTree(const blink::Node*);
 void showNodePath(const blink::Node*);
 #endif
 
 #endif // Node_h