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

third_party/WebKit/Source/core/page/FocusController.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * 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 1003 matching lines @@
 Element* FocusController::findFocusableElementInShadowHost(const Element& shadowHost)
 {
     DCHECK(shadowHost.authorShadowRoot());
     ScopedFocusNavigation scope = ScopedFocusNavigation::ownedByShadowHost(shadowHost);
     return findFocusableElementAcrossFocusScopes(WebFocusTypeForward, scope);
 }
 
 static bool relinquishesEditingFocus(const Element& element)
 {
     DCHECK(element.hasEditableStyle());
-    return element.document().frame() && element.rootEditableElement();
+    return element.document().frame() && rootEditableElement(element);
 }
 
 static void clearSelectionIfNeeded(LocalFrame* oldFocusedFrame, LocalFrame* newFocusedFrame, Element* newFocusedElement)
 {
     if (!oldFocusedFrame || !newFocusedFrame)
         return;
 
     if (oldFocusedFrame->document() != newFocusedFrame->document())
         return;
 
@@ skipping 26 matching lines @@
 bool FocusController::setFocusedElement(Element* element, Frame* newFocusedFrame, const FocusParams& params)
 {
     LocalFrame* oldFocusedFrame = focusedFrame();
     Document* oldDocument = oldFocusedFrame ? oldFocusedFrame->document() : nullptr;
 
     Element* oldFocusedElement = oldDocument ? oldDocument->focusedElement() : nullptr;
     if (element && oldFocusedElement == element)
         return true;
 
     // FIXME: Might want to disable this check for caretBrowsing
-    if (oldFocusedElement && oldFocusedElement->isRootEditableElement() && !relinquishesEditingFocus(*oldFocusedElement))
+    if (oldFocusedElement && isRootEditableElement(*oldFocusedElement) && !relinquishesEditingFocus(*oldFocusedElement))
         return false;
 
     m_page->chromeClient().willSetInputMethodState();
 
     Document* newDocument = nullptr;
     if (element)
         newDocument = &element->document();
     else if (newFocusedFrame && newFocusedFrame->isLocalFrame())
         newDocument = toLocalFrame(newFocusedFrame)->document();
 
@@ skipping 226 matching lines @@
     return consumed;
 }
 
 DEFINE_TRACE(FocusController)
 {
     visitor->trace(m_page);
     visitor->trace(m_focusedFrame);
 }
 
 } // namespace blink