[Editing][DOM][CodeHealth] Remove unused enum Node::UserSelectAllTreatment.

third_party/WebKit/Source/core/editing/CaretBase.cpp

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 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 167 matching lines @@
     }
     return false;
 }
 
 void CaretBase::invalidateCaretRect(Node* node, bool caretRectChanged)
 {
     if (caretRectChanged)
         return;
 
     if (LayoutViewItem view = node->document().layoutViewItem()) {
-        if (node->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable) || shouldRepaintCaret(view))
+        if (node->isContentEditable() || shouldRepaintCaret(view))
             invalidateLocalCaretRect(node, localCaretRectWithoutUpdate());
     }
 }
 
 void CaretBase::paintCaret(Node* node, GraphicsContext& context, const LayoutPoint& paintOffset) const
 {
     if (m_caretVisibility == CaretVisibility::Hidden)
         return;
 
     LayoutRect drawingRect = localCaretRectWithoutUpdate();
@@ skipping 14 matching lines @@
 
     context.fillRect(FloatRect(drawingRect), caretColor);
 }
 
 void CaretBase::setCaretVisibility(CaretVisibility visibility)
 {
     m_caretVisibility = visibility;
 }
 
 } // namespace blink