Remove writing mode code from the linebox tree.

sky/engine/core/rendering/RenderBlockLineLayout.cpp

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
  * Copyright (C) 2010 Google 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.
  *
@@ skipping 95 matching lines @@
         bool constructedNewBox = false;
         bool allowedToConstructNewBox = !hasDefaultLineBoxContain || !inlineFlow || inlineFlow->alwaysCreateLineBoxes();
         bool canUseExistingParentBox = parentBox && !parentIsConstructedOrHaveNext(parentBox);
         if (allowedToConstructNewBox && !canUseExistingParentBox) {
             // We need to make a new box for this render object.  Once
             // made, we need to place it at the end of the current line.
             InlineBox* newBox = createInlineBoxForRenderer(obj, obj == this);
             ASSERT_WITH_SECURITY_IMPLICATION(newBox->isInlineFlowBox());
             parentBox = toInlineFlowBox(newBox);
             parentBox->setFirstLineStyleBit(lineInfo.isFirstLine());
-            // FIXME(sky): Remove
-            parentBox->setIsHorizontal(true);
             if (!hasDefaultLineBoxContain)
                 parentBox->clearDescendantsHaveSameLineHeightAndBaseline();
             constructedNewBox = true;
         }
 
         if (constructedNewBox || canUseExistingParentBox) {
             if (!result)
                 result = parentBox;
 
             // If we have hit the block itself, then |box| represents the root
@@ skipping 1506 matching lines @@
     float logicalLeft = logicalLeftOffsetForLine(logicalHeight(), false).toFloat();
     float availableLogicalWidth = logicalRightOffsetForLine(logicalHeight(), false) - logicalLeft;
     updateLogicalWidthForAlignment(textAlign, 0, 0, logicalLeft, totalLogicalWidth, availableLogicalWidth, 0);
 
     if (!style()->isLeftToRightDirection())
         return logicalWidth() - logicalLeft;
     return logicalLeft;
 }
 
 }