Add Length::isPercent and use it in tables.

third_party/WebKit/Source/core/layout/line/RootInlineBox.cpp

 /*
  * Copyright (C) 2003, 2006, 2008 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 638 matching lines @@
         } else if (verticalAlign == VerticalAlignTextBottom) {
             verticalPosition += fontMetrics.descent(baselineType());
             // lineHeight - baselinePosition is always 0 for replaced elements (except inline blocks), so don't bother wasting time in that case.
             if (!boxModel.isAtomicInlineLevel() || boxModel.isInlineBlockOrInlineTable())
                 verticalPosition -= (boxModel.lineHeight(firstLine, lineDirection) - boxModel.baselinePosition(baselineType(), firstLine, lineDirection));
         } else if (verticalAlign == VerticalAlignBaselineMiddle) {
             verticalPosition += -boxModel.lineHeight(firstLine, lineDirection) / 2 + boxModel.baselinePosition(baselineType(), firstLine, lineDirection);
         } else if (verticalAlign == VerticalAlignLength) {
             LayoutUnit lineHeight;
             // Per http://www.w3.org/TR/CSS21/visudet.html#propdef-vertical-align: 'Percentages: refer to the 'line-height' of the element itself'.
-            if (boxModel.style()->getVerticalAlignLength().hasPercent())
+            if (boxModel.style()->getVerticalAlignLength().isPercentOrCalc())
                 lineHeight = LayoutUnit(boxModel.style()->computedLineHeight());
             else
                 lineHeight = boxModel.lineHeight(firstLine, lineDirection);
             verticalPosition -= valueForLength(boxModel.style()->getVerticalAlignLength(), lineHeight);
         }
     }
 
     // Store the cached value.
     if (isLayoutInline && !firstLine)
         verticalPositionCache.set(boxModel, baselineType(), verticalPosition.toInt());
@@ skipping 33 matching lines @@
     endBox = nullptr;
     return nullptr;
 }
 
 const char* RootInlineBox::boxName() const
 {
     return "RootInlineBox";
 }
 
 } // namespace blink