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

Source/core/editing/VisiblePosition.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Portions Copyright (c) 2011 Motorola Mobility, 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
@@ skipping 427 matching lines @@
     VisiblePosition right = VisiblePosition(pos, DOWNSTREAM);
     ASSERT(right != *this);
 
     if (!stayInEditableContent)
         return right;
 
     return directionOfEnclosingBlock(right.deepEquivalent()) == LTR ? honorEditingBoundaryAtOrAfter(right) : honorEditingBoundaryAtOrBefore(right);
 }
 
 template <typename PositionWithAffinityType>
-PositionWithAffinityType honorEditingBoundaryAtOrBeforeAlgorithm(const PositionWithAffinityType& pos, const Position& anchor)
+PositionWithAffinityType honorEditingBoundaryAtOrBeforeAlgorithm(const PositionWithAffinityType& pos, const typename PositionWithAffinityType::PositionType& anchor)
 {
     if (pos.isNull())
         return pos;
 
     ContainerNode* highestRoot = highestEditableRoot(anchor);
 
     // Return empty position if pos is not somewhere inside the editable region containing this position
     if (highestRoot && !pos.position().deprecatedNode()->isDescendantOf(highestRoot))
         return PositionWithAffinityType();
 
@@ skipping 10 matching lines @@
 
     // Return the last position before pos that is in the same editable region as this position
     return lastEditablePositionBeforePositionInRoot(pos.position(), highestRoot);
 }
 
 PositionWithAffinity honorEditingBoundaryAtOrBeforeOf(const PositionWithAffinity& pos, const Position& anchor)
 {
     return honorEditingBoundaryAtOrBeforeAlgorithm(pos, anchor);
 }
 
+PositionInComposedTreeWithAffinity honorEditingBoundaryAtOrBeforeOf(const PositionInComposedTreeWithAffinity& pos, const PositionInComposedTree& anchor)
+{
+    return honorEditingBoundaryAtOrBeforeAlgorithm(pos, anchor);
+}
+
 VisiblePosition VisiblePosition::honorEditingBoundaryAtOrBefore(const VisiblePosition &pos) const
 {
     return VisiblePosition(honorEditingBoundaryAtOrBeforeOf(PositionWithAffinity(pos.deepEquivalent(), pos.affinity()), deepEquivalent()));
 }
 
 VisiblePosition VisiblePosition::honorEditingBoundaryAtOrAfter(const VisiblePosition &pos) const
 {
     if (pos.isNull())
         return pos;
 
@@ skipping 341 matching lines @@
     else
         fprintf(stderr, "Cannot showTree for (nil) VisiblePosition.\n");
 }
 
 void showTree(const blink::VisiblePosition& vpos)
 {
     vpos.showTreeForThis();
 }
 
 #endif