Return refererence from InlineBox::root()

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 171 matching lines @@
             }
 
             ASSERT(offset == box->caretLeftmostOffset());
 
             unsigned char level = box->bidiLevel();
             InlineBox* prevBox = box->prevLeafChild();
 
             if (box->direction() == primaryDirection) {
                 if (!prevBox) {
                     InlineBox* logicalStart = 0;
-                    if (primaryDirection == LTR ? box->root()->getLogicalStartBoxWithNode(logicalStart) : box->root()->getLogicalEndBoxWithNode(logicalStart)) {
+                    if (primaryDirection == LTR ? box->root().getLogicalStartBoxWithNode(logicalStart) : box->root().getLogicalEndBoxWithNode(logicalStart)) {
                         box = logicalStart;
                         renderer = &box->renderer();
                         offset = primaryDirection == LTR ? box->caretMinOffset() : box->caretMaxOffset();
                     }
                     break;
                 }
                 if (prevBox->bidiLevel() >= level)
                     break;
 
                 level = prevBox->bidiLevel();
@@ skipping 144 matching lines @@
             }
 
             ASSERT(offset == box->caretRightmostOffset());
 
             unsigned char level = box->bidiLevel();
             InlineBox* nextBox = box->nextLeafChild();
 
             if (box->direction() == primaryDirection) {
                 if (!nextBox) {
                     InlineBox* logicalEnd = 0;
-                    if (primaryDirection == LTR ? box->root()->getLogicalEndBoxWithNode(logicalEnd) : box->root()->getLogicalStartBoxWithNode(logicalEnd)) {
+                    if (primaryDirection == LTR ? box->root().getLogicalEndBoxWithNode(logicalEnd) : box->root().getLogicalStartBoxWithNode(logicalEnd)) {
                         box = logicalEnd;
                         renderer = &box->renderer();
                         offset = primaryDirection == LTR ? box->caretMaxOffset() : box->caretMinOffset();
                     }
                     break;
                 }
 
                 if (nextBox->bidiLevel() >= level)
                     break;
 
@@ skipping 431 matching lines @@
     if (vpos)
         vpos->showTreeForThis();
 }
 
 void showTree(const WebCore::VisiblePosition& vpos)
 {
     vpos.showTreeForThis();
 }
 
 #endif