[Editing][DOM][CodeHealth] Make Node::hasEditableStyle global functions.

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

 /*
  * Copyright (C) 2012, Google 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 1040 matching lines @@
 
     if (isHTMLTextAreaElement(*node))
         return toHTMLTextAreaElement(*node).isReadOnly();
 
     if (isHTMLInputElement(*node)) {
         HTMLInputElement& input = toHTMLInputElement(*node);
         if (input.isTextField())
             return input.isReadOnly();
     }
 
-    return !node->hasEditableStyle();
+    return !hasEditableStyle(*node);
 }
 
 bool AXNodeObject::isRequired() const
 {
     Node* n = this->getNode();
     if (n && (n->isElementNode() && toElement(n)->isFormControlElement()) && hasAttribute(requiredAttr))
         return toHTMLFormControlElement(n)->isRequired();
 
     if (equalIgnoringCase(getAttribute(aria_requiredAttr), "true"))
         return true;
@@ skipping 1768 matching lines @@
     return placeholder;
 }
 
 DEFINE_TRACE(AXNodeObject)
 {
     visitor->trace(m_node);
     AXObject::trace(visitor);
 }
 
 } // namespace blink