Make inSameLine() in VisibleUnits.cpp to work with positions in composed tree

Source/core/editing/RenderedPosition.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 79 matching lines @@
 {
     if (position.isNull())
         return;
     position.getInlineBoxAndOffset(affinity, m_inlineBox, m_offset);
     if (m_inlineBox)
         m_layoutObject = &m_inlineBox->layoutObject();
     else
         m_layoutObject = layoutObjectFromPosition(position);
 }
 
+RenderedPosition::RenderedPosition(const PositionInComposedTree& position, EAffinity affinity)
+    : RenderedPosition(toPositionInDOMTree(position), affinity)
+{
+}
+
 InlineBox* RenderedPosition::prevLeafChild() const
 {
     if (m_prevLeafChild == uncachedInlineBox())
         m_prevLeafChild = m_inlineBox->prevLeafChildIgnoringLineBreak();
     return m_prevLeafChild;
 }
 
 InlineBox* RenderedPosition::nextLeafChild() const
 {
     if (m_nextLeafChild == uncachedInlineBox())
@@ skipping 141 matching lines @@
 bool layoutObjectContainsPosition(LayoutObject* target, const Position& position)
 {
     for (LayoutObject* layoutObject = layoutObjectFromPosition(position); layoutObject && layoutObject->node(); layoutObject = layoutObject->parent()) {
         if (layoutObject == target)
             return true;
     }
     return false;
 }
 
 };