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

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

 /*
  * Copyright (C) 2006, 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 139 matching lines @@
         return;
     moveParagraphWithClones(startOfContents, endOfContents, targetBlockquote, outerBlock, editingState);
 }
 
 void IndentOutdentCommand::outdentParagraph(EditingState* editingState)
 {
     VisiblePosition visibleStartOfParagraph = startOfParagraph(endingSelection().visibleStart());
     VisiblePosition visibleEndOfParagraph = endOfParagraph(visibleStartOfParagraph);
 
     HTMLElement* enclosingElement = toHTMLElement(enclosingNodeOfType(visibleStartOfParagraph.deepEquivalent(), &isHTMLListOrBlockquoteElement));
-    if (!enclosingElement || !enclosingElement->parentNode()->hasEditableStyle()) // We can't outdent if there is no place to go!
+    if (!enclosingElement || !hasEditableStyle(*enclosingElement->parentNode())) // We can't outdent if there is no place to go!
         return;
 
     // Use InsertListCommand to remove the selection from the list
     if (isHTMLOListElement(*enclosingElement)) {
         applyCommandToComposite(InsertListCommand::create(document(), InsertListCommand::OrderedList), editingState);
         return;
     }
     if (isHTMLUListElement(*enclosingElement)) {
         applyCommandToComposite(InsertListCommand::create(document(), InsertListCommand::UnorderedList), editingState);
         return;
@@ skipping 12 matching lines @@
         Node* splitPoint = enclosingElement->nextSibling();
         removeNodePreservingChildren(enclosingElement, editingState);
         if (editingState->isAborted())
             return;
         // outdentRegion() assumes it is operating on the first paragraph of an enclosing blockquote, but if there are multiply nested blockquotes and we've
         // just removed one, then this assumption isn't true. By splitting the next containing blockquote after this node, we keep this assumption true
         if (splitPoint) {
             if (Element* splitPointParent = splitPoint->parentElement()) {
                 if (splitPointParent->hasTagName(blockquoteTag)
                     && !splitPoint->hasTagName(blockquoteTag)
-                    && splitPointParent->parentNode()->hasEditableStyle()) // We can't outdent if there is no place to go!
+                    && hasEditableStyle(*splitPointParent->parentNode())) // We can't outdent if there is no place to go!
                     splitElement(splitPointParent, splitPoint);
             }
         }
 
         document().updateStyleAndLayoutIgnorePendingStylesheets();
         visibleStartOfParagraph = createVisiblePosition(visibleStartOfParagraph.deepEquivalent());
         visibleEndOfParagraph = createVisiblePosition(visibleEndOfParagraph.deepEquivalent());
         if (visibleStartOfParagraph.isNotNull() && !isStartOfParagraph(visibleStartOfParagraph)) {
             insertNodeAt(HTMLBRElement::create(document()), visibleStartOfParagraph.deepEquivalent(), editingState);
             if (editingState->isAborted())
@@ skipping 76 matching lines @@
     bool indentingAsListItemResult = tryIndentingAsListItem(start, end, editingState);
     if (editingState->isAborted())
         return;
     if (indentingAsListItemResult)
         blockquoteForNextIndent = nullptr;
     else
         indentIntoBlockquote(start, end, blockquoteForNextIndent, editingState);
 }
 
 } // namespace blink