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

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 1002 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());
+    DCHECK(hasEditableStyle(element));
     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 274 matching lines @@
     return consumed;
 }
 
 DEFINE_TRACE(FocusController)
 {
     visitor->trace(m_page);
     visitor->trace(m_focusedFrame);
 }
 
 } // namespace blink