Revert of [Oilpan] Prepare full definition of classes before using Member

third_party/WebKit/Source/core/dom/ProcessingInstruction.cpp

 /*
  * Copyright (C) 2000 Peter Kelly (pmk@post.com)
  * Copyright (C) 2006, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 85 matching lines @@
     return PROCESSING_INSTRUCTION_NODE;
 }
 
 PassRefPtrWillBeRawPtr<Node> ProcessingInstruction::cloneNode(bool /*deep*/)
 {
     // FIXME: Is it a problem that this does not copy m_localHref?
     // What about other data members?
     return create(document(), m_target, m_data);
 }
 
-StyleSheet* ProcessingInstruction::sheet() const
-{
-    return m_sheet.get();
-}
-
 void ProcessingInstruction::didAttributeChanged()
 {
     if (m_sheet)
         clearSheet();
 
     String href;
     String charset;
     if (!checkStyleSheet(href, charset))
         return;
     process(href, charset);
@@ skipping 191 matching lines @@
 }
 
 DEFINE_TRACE(ProcessingInstruction)
 {
     visitor->trace(m_sheet);
     visitor->trace(m_listenerForXSLT);
     CharacterData::trace(visitor);
 }
 
 } // namespace