Introduce absoluteCaretBoundsOf() for VisiblePosition

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 674 matching lines @@
 {
     return previousPositionOf(*this).characterAfter();
 }
 
 LayoutRect VisiblePosition::localCaretRect(LayoutObject*& layoutObject) const
 {
     PositionWithAffinity positionWithAffinity(m_deepPosition, m_affinity);
     return localCaretRectOfPosition(positionWithAffinity, layoutObject);
 }
 
-IntRect VisiblePosition::absoluteCaretBounds() const
+IntRect absoluteCaretBoundsOf(const VisiblePosition& visiblePosition)
 {
     LayoutObject* layoutObject;
-    LayoutRect localRect = localCaretRect(layoutObject);
+    LayoutRect localRect = visiblePosition.localCaretRect(layoutObject);
     if (localRect.isEmpty() || !layoutObject)
         return IntRect();
 
     return layoutObject->localToAbsoluteQuad(FloatRect(localRect)).enclosingBoundingBox();
 }
 
 // TODO(yosin) We should move a global function
 // |lineDirectionPointForBlockDirectionNavigationOf()| to "FrameSelection.h"
 // as static function.
 int lineDirectionPointForBlockDirectionNavigationOf(const VisiblePosition& visiblePosition)
@@ skipping 68 matching lines @@
     else
         fprintf(stderr, "Cannot showTree for (nil) VisiblePosition.\n");
 }
 
 void showTree(const blink::VisiblePosition& vpos)
 {
     vpos.showTreeForThis();
 }
 
 #endif