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

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

 /*
  * Copyright (C) 2007, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Google Inc.
  *
  * 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 406 matching lines @@
         m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(false);
     m_fileInputElementUnderMouse = nullptr;
     return false;
 }
 
 DragOperation DragController::operationForLoad(DragData* dragData)
 {
     ASSERT(dragData);
     Document* doc = m_page->deprecatedLocalMainFrame()->documentAtPoint(dragData->clientPosition());
 
-    if (doc && (m_didInitiateDrag || doc->isPluginDocument() || doc->hasEditableStyle()))
+    if (doc && (m_didInitiateDrag || doc->isPluginDocument() || hasEditableStyle(*doc)))
         return DragOperationNone;
     return dragOperation(dragData);
 }
 
 static bool setSelectionToDragCaret(LocalFrame* frame, VisibleSelection& dragCaret, Range*& range, const IntPoint& point)
 {
     frame->selection().setSelection(dragCaret);
     if (frame->selection().isNone()) {
         dragCaret = VisibleSelection(frame->positionForPoint(point));
         frame->selection().setSelection(dragCaret);
@@ skipping 119 matching lines @@
     HitTestResult result = m_page->deprecatedLocalMainFrame()->eventHandler().hitTestResultAtPoint(point);
 
     if (!result.innerNode())
         return false;
 
     if (dragData->containsFiles() && asFileInput(result.innerNode()))
         return true;
 
     if (isHTMLPlugInElement(*result.innerNode())) {
         HTMLPlugInElement* plugin = toHTMLPlugInElement(result.innerNode());
-        if (!plugin->canProcessDrag() && !result.innerNode()->hasEditableStyle())
+        if (!plugin->canProcessDrag() && !hasEditableStyle(*result.innerNode()))
             return false;
-    } else if (!result.innerNode()->hasEditableStyle()) {
+    } else if (!hasEditableStyle(*result.innerNode())) {
         return false;
     }
 
     if (m_didInitiateDrag && m_documentUnderMouse == m_dragInitiator && result.isSelected())
         return false;
 
     return true;
 }
 
 static DragOperation defaultOperationForDrag(DragOperation srcOpMask)
@@ skipping 416 matching lines @@
 
 DEFINE_TRACE(DragController)
 {
     visitor->trace(m_page);
     visitor->trace(m_documentUnderMouse);
     visitor->trace(m_dragInitiator);
     visitor->trace(m_fileInputElementUnderMouse);
 }
 
 } // namespace blink