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

third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp

 /*
 * Copyright (C) 2008 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 408 matching lines @@
     return object.isLink() || object.isImage() || object.getLayoutObject()->isText();
 }
 
 // Requires layoutObject to be present because it relies on style
 // user-modify. Don't move this logic to AXNodeObject.
 bool AXLayoutObject::isEditable() const
 {
     if (getLayoutObject() && getLayoutObject()->isTextControl())
         return true;
 
-    if (getNode() && getNode()->isContentEditable())
+    if (getNode() && isContentEditable(*getNode()))
         return true;
 
     if (isWebArea()) {
         Document& document = getLayoutObject()->document();
         HTMLElement* body = document.body();
-        if (body && body->isContentEditable())
+        if (body && isContentEditable(*body))
             return true;
 
-        return document.isContentEditable();
+        return isContentEditable(document);
     }
 
     return AXNodeObject::isEditable();
 }
 
 // Requires layoutObject to be present because it relies on style
 // user-modify. Don't move this logic to AXNodeObject.
 bool AXLayoutObject::isRichlyEditable() const
 {
-    if (getNode() && getNode()->isContentRichlyEditable())
+    if (getNode() && isContentRichlyEditable(*getNode()))
         return true;
 
     if (isWebArea()) {
         Document& document = m_layoutObject->document();
         HTMLElement* body = document.body();
-        if (body && body->isContentRichlyEditable())
+        if (body && isContentRichlyEditable(*body))
             return true;
 
-        return document.isContentRichlyEditable();
+        return isContentRichlyEditable(document);
     }
 
     return AXNodeObject::isRichlyEditable();
 }
 
 bool AXLayoutObject::isLinked() const
 {
     if (!isLinkable(*this))
         return false;
 
@@ skipping 2102 matching lines @@
                     result.unite(labelRect);
                 }
             }
         }
     }
 
     return result;
 }
 
 } // namespace blink