[Line Layout API] Add border*() to LineLayoutBoxModel

Source/core/layout/line/InlineFlowBox.cpp

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 605 matching lines @@
 
         LayoutUnit newLogicalTop = curr->logicalTop();
         LayoutUnit newLogicalTopIncludingMargins = newLogicalTop;
         LayoutUnit boxHeight = curr->logicalHeight();
         LayoutUnit boxHeightIncludingMargins = boxHeight;
         LayoutUnit borderPaddingHeight = 0;
         if (curr->isText() || curr->isInlineFlowBox()) {
             const FontMetrics& fontMetrics = curr->layoutObject().style(isFirstLineStyle())->fontMetrics();
             newLogicalTop += curr->baselinePosition(baselineType) - fontMetrics.ascent(baselineType);
             if (curr->isInlineFlowBox()) {
-                LayoutBoxModelObject& boxObject = toLayoutBoxModelObject(curr->layoutObject());
+                LineLayoutBoxModel boxObject = LineLayoutBoxModel(curr->lineLayoutItem());
                 newLogicalTop -= boxObject.style(isFirstLineStyle())->isHorizontalWritingMode() ? boxObject.borderTop() + boxObject.paddingTop() :
                     boxObject.borderRight() + boxObject.paddingRight();
                 borderPaddingHeight = boxObject.borderAndPaddingLogicalHeight();
             }
             newLogicalTopIncludingMargins = newLogicalTop;
         } else if (!curr->layoutObject().isBR()) {
             LineLayoutBox box = LineLayoutBox(curr->lineLayoutItem());
             newLogicalTopIncludingMargins = newLogicalTop;
             LayoutUnit overSideMargin = curr->isHorizontal() ? box.marginTop() : box.marginRight();
             LayoutUnit underSideMargin = curr->isHorizontal() ? box.marginBottom() : box.marginLeft();
@@ skipping 671 matching lines @@
         ASSERT(child->prevOnLine() == prev);
         prev = child;
     }
     ASSERT(prev == m_lastChild);
 #endif
 }
 
 #endif
 
 } // namespace blink