Let RangeboundaryPoint::container_node_ be reference.

third_party/WebKit/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
@@ skipping 50 matching lines @@
                        unsigned end_offset);
   static Range* Create(Document&, const Position&, const Position&);
   static Range* CreateAdjustedToTreeScope(const TreeScope&, const Position&);
 
   void Dispose();
 
   Document& OwnerDocument() const {
     DCHECK(owner_document_);
     return *owner_document_.Get();
   }
-  Node* startContainer() const { return start_.Container(); }
+  Node* startContainer() const { return &start_.Container(); }
   unsigned startOffset() const { return start_.Offset(); }
-  Node* endContainer() const { return end_.Container(); }
+  Node* endContainer() const { return &end_.Container(); }
   unsigned endOffset() const { return end_.Offset(); }
 
   bool collapsed() const { return start_ == end_; }
   bool IsConnected() const;
 
   Node* commonAncestorContainer() const;
   static Node* commonAncestorContainer(const Node* container_a,
                                        const Node* container_b);
   void setStart(Node* container,
                 unsigned offset,
@@ skipping 137 matching lines @@
 using RangeVector = HeapVector<Member<Range>>;
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const blink::Range*);
 #endif
 
 #endif  // Range_h