Don't use rowIndex() if needsCellRecalc().

Source/core/rendering/RenderTableRow.cpp

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2013 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
@@ skipping 58 matching lines @@
 }
 
 void RenderTableRow::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
 {
     ASSERT(style()->display() == TABLE_ROW);
 
     RenderBox::styleDidChange(diff, oldStyle);
     propagateStyleToAnonymousChildren();
 
     if (section() && oldStyle && style()->logicalHeight() != oldStyle->logicalHeight())
-        section()->rowLogicalHeightChanged(rowIndex());
+        section()->rowLogicalHeightChanged(this);
 
     // If border was changed, notify table.
     if (parent()) {
         RenderTable* table = this->table();
         if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style()->border())
             table->invalidateCollapsedBorders();
 
         if (table && oldStyle && diff.needsFullLayout() && needsLayout() && table->collapseBorders() && borderWidthChanged(oldStyle, style())) {
             // If the border width changes on a row, we need to make sure the cells in the row know to lay out again.
             // This only happens when borders are collapsed, since they end up affecting the border sides of the cell
@@ skipping 167 matching lines @@
 
 RenderTableRow* RenderTableRow::createAnonymousWithParentRenderer(const RenderObject* parent)
 {
     RenderTableRow* newRow = RenderTableRow::createAnonymous(&parent->document());
     RefPtr<RenderStyle> newStyle = RenderStyle::createAnonymousStyleWithDisplay(parent->style(), TABLE_ROW);
     newRow->setStyle(newStyle.release());
     return newRow;
 }
 
 } // namespace blink