[Editing][DOM][CodeHealth] Make Node::isContentEditable and Node::isRichEditable global functions.

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 d911c98bb50e6b5b22966e5e5128dac3fec68c64..927c8ada2f99fdfe32eb7a59ef1ca4bb39f5aca1 100644
--- a/third_party/WebKit/Source/core/dom/Node.h
+++ b/third_party/WebKit/Source/core/dom/Node.h
@@ -416,9 +416,6 @@ public:
     // must be recognized as inert to prevent text selection.
     bool isInert() const;
 
-    bool isContentEditable() const;
-    bool isContentRichlyEditable() const;
-
     bool hasEditableStyle(EditableType = ContentIsEditable) const;
     bool layoutObjectIsRichlyEditable(EditableType = ContentIsEditable) const;
 
@@ -864,6 +861,8 @@ inline ScriptWrappable* ScriptWrappable::fromNode(Node* node)
 CORE_EXPORT bool isRootEditableElement(const Node&);
 CORE_EXPORT Element* rootEditableElement(const Node&);
 CORE_EXPORT Element* rootEditableElement(const Node&, EditableType);
+CORE_EXPORT bool isContentEditable(const Node&);
+CORE_EXPORT bool isContentRichlyEditable(const Node&);
 
 // Allow equality comparisons of Nodes by reference or pointer, interchangeably.
 DEFINE_COMPARISON_OPERATORS_WITH_REFERENCES_REFCOUNTED(Node)