Remove SiblingRuleHelper

Source/core/dom/Node.cpp

Index: Source/core/dom/Node.cpp
diff --git a/Source/core/dom/Node.cpp b/Source/core/dom/Node.cpp
index 59a60dc30368c59a007a4977c004225c0132f7e4..768131c981f9a3bf7e179be4470bcb831bbabbf2 100644
--- a/Source/core/dom/Node.cpp
+++ b/Source/core/dom/Node.cpp
@@ -335,6 +335,22 @@ void Node::clearRareData()
     clearFlag(HasRareDataFlag);
 }
 
+bool Node::hasRestyleFlagInternal(DynamicRestyleFlags mask) const
+{
+    return rareData()->hasRestyleFlag(mask);
+}
+
+bool Node::hasRestyleFlagsInternal() const
+{
+    return rareData()->hasRestyleFlags();
+}
+
+void Node::setRestyleFlag(DynamicRestyleFlags mask)
+{
+    ASSERT(isElementNode() || isShadowRoot());
+    ensureRareData().setRestyleFlag(mask);
+}
+
 Node* Node::toNode()
 {
     return this;