Make Range constructable

Source/core/dom/Range.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Gunnstein Lye (gunnstein@netcom.no)
  * (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
  * (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 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
@@ skipping 33 matching lines @@
 class FloatQuad;
 class Node;
 class NodeWithIndex;
 class Text;
 
 class Range : public RefCounted<Range> {
 public:
     static PassRefPtr<Range> create(PassRefPtr<Document>);
     static PassRefPtr<Range> create(PassRefPtr<Document>, PassRefPtr<Node> startContainer, int startOffset, PassRefPtr<Node> endContainer, int endOffset);
     static PassRefPtr<Range> create(PassRefPtr<Document>, const Position&, const Position&);
+    static PassRefPtr<Range> create(ScriptExecutionContext*);
     ~Range();
 
     Document* ownerDocument() const { return m_ownerDocument.get(); }
     Node* startContainer() const { return m_start.container(); }
     int startOffset() const { return m_start.offset(); }
     Node* endContainer() const { return m_end.container(); }
     int endOffset() const { return m_end.offset(); }
 
     Node* startContainer(ExceptionCode&) const;
     int startOffset(ExceptionCode&) const;
@@ skipping 114 matching lines @@
 bool areRangesEqual(const Range*, const Range*);
 
 } // namespace
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const WebCore::Range*);
 #endif
 
 #endif