[Editing][CodeHealth] Make Node::rootEditableElement static

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

 /*
  * Copyright (C) 2005, 2006, 2007, 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 1047 matching lines @@
 void CompositeEditCommand::cloneParagraphUnderNewElement(const Position& start, const Position& end, Node* passedOuterNode, Element* blockElement, EditingState* editingState)
 {
     DCHECK_LE(start, end);
     DCHECK(passedOuterNode);
     DCHECK(blockElement);
 
     // First we clone the outerNode
     Node* lastNode = nullptr;
     Node* outerNode = passedOuterNode;
 
-    if (outerNode->isRootEditableElement()) {
+    if (isRootEditableElement(*outerNode)) {
         lastNode = blockElement;
     } else {
         lastNode = outerNode->cloneNode(isDisplayInsideTable(outerNode));
         appendNode(lastNode, blockElement, editingState);
         if (editingState->isAborted())
             return;
     }
 
     if (start.anchorNode() != outerNode && lastNode->isElementNode() && start.anchorNode()->isDescendantOf(outerNode)) {
         HeapVector<Member<Node>> ancestors;
@@ skipping 308 matching lines @@
         return false;
 
     EditingStyle* style = EditingStyle::create(endingSelection().start());
     style->mergeTypingStyle(&document());
 
     ContainerNode* listNode = emptyListItem->parentNode();
     // FIXME: Can't we do something better when the immediate parent wasn't a list node?
     if (!listNode
         || (!isHTMLUListElement(*listNode) && !isHTMLOListElement(*listNode))
         || !listNode->hasEditableStyle()
-        || listNode == emptyListItem->rootEditableElement())
+        || listNode == rootEditableElement(*emptyListItem))
         return false;
 
     HTMLElement* newBlock = nullptr;
     if (ContainerNode* blockEnclosingList = listNode->parentNode()) {
         if (isHTMLLIElement(*blockEnclosingList)) { // listNode is inside another list item
             if (visiblePositionAfterNode(*blockEnclosingList).deepEquivalent() == visiblePositionAfterNode(*listNode).deepEquivalent()) {
                 // If listNode appears at the end of the outer list item, then move listNode outside of this list item
                 // e.g. <ul><li>hello <ul><li><br></li></ul> </li></ul> should become <ul><li>hello</li> <ul><li><br></li></ul> </ul> after this section
                 // If listNode does NOT appear at the end, then we should consider it as a regular paragraph.
                 // e.g. <ul><li> <ul><li><br></li></ul> hello</li></ul> should become <ul><li> <div><br></div> hello</li></ul> at the end
@@ skipping 211 matching lines @@
 }
 
 DEFINE_TRACE(CompositeEditCommand)
 {
     visitor->trace(m_commands);
     visitor->trace(m_composition);
     EditCommand::trace(visitor);
 }
 
 } // namespace blink