[Editing][CodeHealth] Make Node::rootEditableElement static

third_party/WebKit/Source/core/dom/Node.h

Index: third_party/WebKit/Source/core/dom/Node.h
diff --git a/third_party/WebKit/Source/core/dom/Node.h b/third_party/WebKit/Source/core/dom/Node.h
index ad8cbb44bc25ed3e16ec6a51c36b4e1fb368847f..a3f8ef6d7178ab3cc3fef910916d7a6ead739df0 100644
--- a/third_party/WebKit/Source/core/dom/Node.h
+++ b/third_party/WebKit/Source/core/dom/Node.h
@@ -335,10 +335,6 @@ public:
 
     virtual bool canContainRangeEndPoint() const { return false; }
 
-    bool isRootEditableElement() const;
-    Element* rootEditableElement() const;
-    Element* rootEditableElement(EditableType) const;
-
     // For <link> and <style> elements.
     virtual bool sheetLoaded() { return true; }
     enum LoadedSheetErrorStatus {
@@ -894,6 +890,11 @@ inline ScriptWrappable* ScriptWrappable::fromNode(Node* node)
     return node;
 }
 
+// TODO(yoichio): Move to core/editing
+CORE_EXPORT bool isRootEditableElement(const Node&);
+CORE_EXPORT Element* rootEditableElement(const Node&);
+CORE_EXPORT Element* rootEditableElement(const Node&, EditableType);
+
 // Allow equality comparisons of Nodes by reference or pointer, interchangeably.
 DEFINE_COMPARISON_OPERATORS_WITH_REFERENCES_REFCOUNTED(Node)