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

third_party/WebKit/Source/core/editing/commands/RemoveNodePreservingChildrenCommand.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 23 matching lines @@
     : CompositeEditCommand(node->document())
     , m_node(node)
     , m_shouldAssumeContentIsAlwaysEditable(shouldAssumeContentIsAlwaysEditable)
 {
     DCHECK(m_node);
 }
 
 void RemoveNodePreservingChildrenCommand::doApply(EditingState* editingState)
 {
     ABORT_EDITING_COMMAND_IF(!m_node->parentNode());
-    ABORT_EDITING_COMMAND_IF(!m_node->parentNode()->hasEditableStyle());
+    ABORT_EDITING_COMMAND_IF(!hasEditableStyle(*m_node->parentNode()));
     if (m_node->isContainerNode()) {
         NodeVector children;
         getChildNodes(toContainerNode(*m_node), children);
 
         for (auto& currentChild : children) {
             Node* child = currentChild.release();
             removeNode(child, editingState, m_shouldAssumeContentIsAlwaysEditable);
             if (editingState->isAborted())
                 return;
             insertNodeBefore(child, m_node, editingState, m_shouldAssumeContentIsAlwaysEditable);
             if (editingState->isAborted())
                 return;
         }
     }
     removeNode(m_node, editingState, m_shouldAssumeContentIsAlwaysEditable);
 }
 
 DEFINE_TRACE(RemoveNodePreservingChildrenCommand)
 {
     visitor->trace(m_node);
     CompositeEditCommand::trace(visitor);
 }
 
 } // namespace blink