Sync cloneNode() IDL with the spec

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

 /*
  * Copyright (C) 2000 Peter Kelly (pmk@post.com)
  * Copyright (C) 2006 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 64 matching lines @@
 
     void setEventListenerForXSLT(PassRefPtrWillBeRawPtr<DetachableEventListener> listener) { m_listenerForXSLT = listener; }
     EventListener* eventListenerForXSLT();
     void clearEventListenerForXSLT();
 
 private:
     ProcessingInstruction(Document&, const String& target, const String& data);
 
     String nodeName() const override;
     NodeType nodeType() const override;
-    PassRefPtrWillBeRawPtr<Node> cloneNode(bool deep = true) override;
+    PassRefPtrWillBeRawPtr<Node> cloneNode(bool deep) override;
 
     InsertionNotificationRequest insertedInto(ContainerNode*) override;
     void removedFrom(ContainerNode*) override;
 
     bool checkStyleSheet(String& href, String& charset);
     void process(const String& href, const String& charset);
 
     void setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CSSStyleSheetResource*) override;
     void setXSLStyleSheet(const String& href, const KURL& baseURL, const String& sheet) override;
 
@@ skipping 21 matching lines @@
 DEFINE_NODE_TYPE_CASTS(ProcessingInstruction, nodeType() == Node::PROCESSING_INSTRUCTION_NODE);
 
 inline bool isXSLStyleSheet(const Node& node)
 {
     return node.nodeType() == Node::PROCESSING_INSTRUCTION_NODE && toProcessingInstruction(node).isXSL();
 }
 
 } // namespace blink
 
 #endif // ProcessingInstruction_h