Create LineLayout api

Source/core/dom/Position.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2009 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 879 matching lines @@
 }
 
 template <typename Strategy>
 bool PositionAlgorithm<Strategy>::hasRenderedNonAnonymousDescendantsWithHeight(LayoutObject* layoutObject)
 {
     LayoutObject* stop = layoutObject->nextInPreOrderAfterChildren();
     for (LayoutObject *o = layoutObject->slowFirstChild(); o && o != stop; o = o->nextInPreOrder()) {
         if (o->nonPseudoNode()) {
             if ((o->isText() && boundingBoxLogicalHeight(o, toLayoutText(o)->linesBoundingBox()))
                 || (o->isBox() && toLayoutBox(o)->pixelSnappedLogicalHeight())
-                || (o->isLayoutInline() && isEmptyInline(o) && boundingBoxLogicalHeight(o, toLayoutInline(o)->linesBoundingBox())))
+                || (o->isLayoutInline() && isEmptyInline(LineLayoutItem(o)) && boundingBoxLogicalHeight(o, toLayoutInline(o)->linesBoundingBox())))
                 return true;
         }
     }
     return false;
 }
 
 template <typename Strategy>
 bool PositionAlgorithm<Strategy>::nodeIsUserSelectNone(Node* node)
 {
     return node && node->layoutObject() && !node->layoutObject()->isSelectable();
@@ skipping 627 matching lines @@
 
 void showTree(const blink::Position* pos)
 {
     if (pos)
         pos->showTreeForThis();
     else
         fprintf(stderr, "Cannot showTree for (nil)\n");
 }
 
 #endif