Get rid of isWritingModeRoot.

sky/engine/core/rendering/RenderFlexibleBox.cpp

 /*
  * Copyright (C) 2011 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 124 matching lines @@
     ASSERT(mode == PositionOnContainingLine);
     int baseline = firstLineBoxBaseline();
     if (baseline == -1)
         baseline = synthesizedBaselineFromContentBox(this, direction);
 
     return beforeMarginInLineDirection(direction) + baseline;
 }
 
 int RenderFlexibleBox::firstLineBoxBaseline() const
 {
-    if (isWritingModeRoot() || m_numberOfInFlowChildrenOnFirstLine <= 0)
+    if (m_numberOfInFlowChildrenOnFirstLine <= 0)
         return -1;
     RenderBox* baselineChild = 0;
     int childNumber = 0;
     for (RenderBox* child = m_orderIterator.first(); child; child = m_orderIterator.next()) {
         if (child->isOutOfFlowPositioned())
             continue;
         if (alignmentForChild(child) == ItemPositionBaseline && !hasAutoMarginsInCrossAxis(child)) {
             baselineChild = child;
             break;
         }
@@ skipping 1164 matching lines @@
             ASSERT(child);
             LayoutUnit lineCrossAxisExtent = lineContexts[lineNumber].crossAxisExtent;
             LayoutUnit originalOffset = lineContexts[lineNumber].crossAxisOffset - crossAxisStartEdge;
             LayoutUnit newOffset = contentExtent - originalOffset - lineCrossAxisExtent;
             adjustAlignmentForChild(child, newOffset - originalOffset);
         }
     }
 }
 
 }