[Editing][DOM][CodeHealth] Move Node::*editable* functions to core/editing

third_party/WebKit/Source/web/WebElement.cpp

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "public/web/WebElement.h"
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/HTMLNames.h"
 #include "core/dom/Element.h"
 #include "core/dom/custom/V0CustomElementProcessingStack.h"
+#include "core/editing/EditingUtilities.h"
 #include "core/html/HTMLTextFormControlElement.h"
 #include "platform/graphics/Image.h"
 #include "public/platform/WebRect.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 using namespace HTMLNames;
@@ skipping 116 matching lines @@
     m_private = elem;
     return *this;
 }
 
 WebElement::operator Element*() const
 {
     return toElement(m_private.get());
 }
 
 } // namespace blink