Introduce composed tree version of localCaretRectOfPosition()

Source/core/editing/VisibleUnits.h

 /*
  * Copyright (C) 2004 Apple Computer, 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 134 matching lines @@
 VisiblePosition endOfEditableContent(const VisiblePosition&);
 bool isEndOfEditableOrNonEditableContent(const VisiblePosition&);
 
 CORE_EXPORT InlineBoxPosition computeInlineBoxPosition(const Position&, TextAffinity);
 CORE_EXPORT InlineBoxPosition computeInlineBoxPosition(const Position&, TextAffinity, TextDirection primaryDirection);
 CORE_EXPORT InlineBoxPosition computeInlineBoxPosition(const PositionInComposedTree&, TextAffinity);
 CORE_EXPORT InlineBoxPosition computeInlineBoxPosition(const PositionInComposedTree&, TextAffinity, TextDirection primaryDirection);
 CORE_EXPORT InlineBoxPosition computeInlineBoxPosition(const VisiblePosition&);
 
 // Rect is local to the returned layoutObject
-LayoutRect localCaretRectOfPosition(const PositionWithAffinity&, LayoutObject*&);
+CORE_EXPORT LayoutRect localCaretRectOfPosition(const PositionWithAffinity&, LayoutObject*&);
+CORE_EXPORT LayoutRect localCaretRectOfPosition(const PositionInComposedTreeWithAffinity&, LayoutObject*&);
 bool hasRenderedNonAnonymousDescendantsWithHeight(LayoutObject*);
 
 // Returns a hit-tested VisiblePosition for the given point in contents-space
 // coordinates.
 CORE_EXPORT VisiblePosition visiblePositionForContentsPoint(const IntPoint&, LocalFrame*);
 
 CORE_EXPORT bool rendersInDifferentPosition(const Position&, const Position&);
 
 } // namespace blink
 
 #endif // VisibleUnits_h