Remove unnecessary override of Node#cloneNode in ShadowRoot's WebIDL

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 61 matching lines @@
 }
 
 String ProcessingInstruction::nodeName() const {
   return m_target;
 }
 
 Node::NodeType ProcessingInstruction::getNodeType() const {
   return kProcessingInstructionNode;
 }
 
-Node* ProcessingInstruction::cloneNode(bool /*deep*/) {
+Node* ProcessingInstruction::cloneNode(bool /*deep*/, ExceptionState&) {
   // FIXME: Is it a problem that this does not copy m_localHref?
   // What about other data members?
   return create(document(), m_target, m_data);
 }
 
 void ProcessingInstruction::didAttributeChanged() {
   if (m_sheet)
     clearSheet();
 
   String href;
@@ skipping 199 matching lines @@
 }
 
 DEFINE_TRACE(ProcessingInstruction) {
   visitor->trace(m_sheet);
   visitor->trace(m_listenerForXSLT);
   CharacterData::trace(visitor);
   ResourceOwner<StyleSheetResource>::trace(visitor);
 }
 
 }  // namespace blink