Add macros to define comparison operators to compare by reference or pointer interchangeably

Source/core/dom/Node.h

Index: Source/core/dom/Node.h
diff --git a/Source/core/dom/Node.h b/Source/core/dom/Node.h
index 557103e8988fbcec3e3ac068df124686c2efdb2e..e8124911044aa7d0ab540e315d376cb95429ceb1 100644
--- a/Source/core/dom/Node.h
+++ b/Source/core/dom/Node.h
@@ -884,16 +884,7 @@ inline bool isTreeScopeRoot(const Node& node)
 }
 
 // Allow equality comparisons of Nodes by reference or pointer, interchangeably.
-inline bool operator==(const Node& a, const Node& b) { return &a == &b; }
-inline bool operator==(const Node& a, const Node* b) { return &a == b; }
-inline bool operator==(const Node* a, const Node& b) { return a == &b; }
-inline bool operator!=(const Node& a, const Node& b) { return !(a == b); }
-inline bool operator!=(const Node& a, const Node* b) { return !(a == b); }
-inline bool operator!=(const Node* a, const Node& b) { return !(a == b); }
-inline bool operator==(const PassRefPtr<Node>& a, const Node& b) { return a.get() == &b; }
-inline bool operator==(const Node& a, const PassRefPtr<Node>& b) { return &a == b.get(); }
-inline bool operator!=(const PassRefPtr<Node>& a, const Node& b) { return !(a == b); }
-inline bool operator!=(const Node& a, const PassRefPtr<Node>& b) { return !(a == b); }
+DEFINE_COMPARISON_OPERATORS_WITH_REFERENCES_REFCOUNTED(Node)
 
 
 #define DEFINE_NODE_TYPE_CASTS(thisType, predicate) \