Remove Node::containsForBindings() method

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 254f0e859459ece0e69ed3cdedcaeb2d64027dc9..12f25fd45e52937e72761f7bd17cb251601589dd 100644
--- a/Source/core/dom/Node.h
+++ b/Source/core/dom/Node.h
@@ -484,9 +484,6 @@ public:
     bool containsIncludingHostElements(const Node&) const;
     Node* commonAncestor(const Node&, Node* (*parent)(const Node&));
 
-    // FIXME: Remove this when crbug.com/265716 cleans up contains semantics.
-    bool containsForBindings(const Node* node) const { return containsIncludingShadowDOM(node); }
-
     // Used to determine whether range offsets use characters or node indices.
     virtual bool offsetInCharacters() const;
     // Number of DOM 16-bit units contained in node. Note that rendered text length can be different - e.g. because of