Devirtualize offsetInCharacters

Source/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 1402 matching lines @@
         case DOCUMENT_NODE:
         case DOCUMENT_TYPE_NODE:
             // Do nothing.
             return;
     }
     ASSERT_NOT_REACHED();
 }
 
 bool Node::offsetInCharacters() const
 {
-    return false;
+    return isCharacterDataNode();
 }
 
 unsigned short Node::compareDocumentPosition(const Node* otherNode, ShadowTreesTreatment treatment) const
 {
     // It is not clear what should be done if |otherNode| is nullptr.
     if (!otherNode)
         return DOCUMENT_POSITION_DISCONNECTED;
 
     if (otherNode == this)
         return DOCUMENT_POSITION_EQUIVALENT;
@@ skipping 1026 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif