Revert of Remove webkitConvertPointFromPageToNode() and webkitConvertPointFromNodeToPage()

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 1584 matching lines @@
         }
     }
 
     // There was no difference between the two parent chains, i.e., one was a subset of the other.  The shorter
     // chain is the ancestor.
     return index1 < index2 ?
                DOCUMENT_POSITION_FOLLOWING | DOCUMENT_POSITION_CONTAINED_BY | connection :
                DOCUMENT_POSITION_PRECEDING | DOCUMENT_POSITION_CONTAINS | connection;
 }
 
+FloatPoint Node::convertToPage(const FloatPoint& p) const
+{
+    // If there is a renderer, just ask it to do the conversion
+    if (renderer())
+        return renderer()->localToAbsolute(p, UseTransforms);
+
+    // Otherwise go up the tree looking for a renderer
+    if (Element* parent = parentElement())
+        return parent->convertToPage(p);
+
+    // No parent - no conversion needed
+    return p;
+}
+
+FloatPoint Node::convertFromPage(const FloatPoint& p) const
+{
+    // If there is a renderer, just ask it to do the conversion
+    if (renderer())
+        return renderer()->absoluteToLocal(p, UseTransforms);
+
+    // Otherwise go up the tree looking for a renderer
+    if (Element* parent = parentElement())
+        return parent->convertFromPage(p);
+
+    // No parent - no conversion needed
+    return p;
+}
+
 String Node::debugName() const
 {
     StringBuilder name;
     name.append(nodeName());
 
     if (isElementNode()) {
         const Element& thisElement = toElement(*this);
         if (thisElement.hasID()) {
             name.appendLiteral(" id=\'");
             name.append(thisElement.getIdAttribute());
@@ skipping 867 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif