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

third_party/WebKit/Source/core/editing/commands/WrapContentsInDummySpanCommand.cpp

 /*
  * Copyright (C) 2005, 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 42 matching lines @@
 {
     m_dummySpan = HTMLSpanElement::create(document());
 
     executeApply();
 }
 
 void WrapContentsInDummySpanCommand::doUnapply()
 {
     DCHECK(m_element);
 
-    if (!m_dummySpan || !m_element->hasEditableStyle())
+    if (!m_dummySpan || !hasEditableStyle(*m_element))
         return;
 
     NodeVector children;
     getChildNodes(*m_dummySpan, children);
 
     for (auto& child : children)
         m_element->appendChild(child.release(), IGNORE_EXCEPTION);
 
     m_dummySpan->remove(IGNORE_EXCEPTION);
 }
 
 void WrapContentsInDummySpanCommand::doReapply()
 {
     DCHECK(m_element);
 
-    if (!m_dummySpan || !m_element->hasEditableStyle())
+    if (!m_dummySpan || !hasEditableStyle(*m_element))
         return;
 
     executeApply();
 }
 
 DEFINE_TRACE(WrapContentsInDummySpanCommand)
 {
     visitor->trace(m_element);
     visitor->trace(m_dummySpan);
     SimpleEditCommand::trace(visitor);
 }
 
 } // namespace blink