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

third_party/WebKit/Source/core/editing/spellcheck/SpellCheckRequester.cpp

 /*
  * Copyright (C) 2010 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:
  * 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 29 matching lines @@
     Range* paragraphRange,
     const String& text,
     TextCheckingTypeMask mask,
     TextCheckingProcessType processType,
     const Vector<uint32_t>& documentMarkersInRange,
     const Vector<unsigned>& documentMarkerOffsets,
     int requestNumber)
     : m_requester(nullptr)
     , m_checkingRange(checkingRange)
     , m_paragraphRange(paragraphRange)
-    , m_rootEditableElement(m_checkingRange->startContainer()->rootEditableElement())
+    , m_rootEditableElement(blink::rootEditableElement(*m_checkingRange->startContainer()))
     , m_requestData(unrequestedTextCheckingSequence, text, mask, processType, documentMarkersInRange, documentMarkerOffsets)
     , m_requestNumber(requestNumber)
 {
     DCHECK(m_checkingRange);
     DCHECK(m_checkingRange->inShadowIncludingDocument());
     DCHECK(m_paragraphRange);
     DCHECK(m_paragraphRange->inShadowIncludingDocument());
     DCHECK(m_rootEditableElement);
 }
 
@@ skipping 16 matching lines @@
         m_checkingRange->dispose();
     if (m_paragraphRange && m_paragraphRange != m_checkingRange)
         m_paragraphRange->dispose();
 }
 
 // static
 SpellCheckRequest* SpellCheckRequest::create(TextCheckingTypeMask textCheckingOptions, TextCheckingProcessType processType, const EphemeralRange& checkingRange, const EphemeralRange& paragraphRange, int requestNumber)
 {
     if (checkingRange.isNull())
         return nullptr;
-    if (!checkingRange.startPosition().computeContainerNode()->rootEditableElement())
+    if (!blink::rootEditableElement(*checkingRange.startPosition().computeContainerNode()))
         return nullptr;
 
     String text = plainText(checkingRange, TextIteratorEmitsObjectReplacementCharacter);
     if (text.isEmpty())
         return nullptr;
 
     Range* checkingRangeObject = createRange(checkingRange);
     Range* paragraphRangeObject = nullptr;
     // Share identical Range objects.
     if (checkingRange == paragraphRange)
@@ skipping 213 matching lines @@
 }
 
 DEFINE_TRACE(SpellCheckRequester)
 {
     visitor->trace(m_frame);
     visitor->trace(m_processingRequest);
     visitor->trace(m_requestQueue);
 }
 
 } // namespace blink