Add Length::isPercent and use it in tables.

third_party/WebKit/Source/core/style/ComputedStyle.cpp

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Adobe Systems Incorporated. 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 1496 matching lines @@
 
 int ComputedStyle::computedLineHeight() const
 {
     const Length& lh = lineHeight();
 
     // Negative value means the line height is not set. Use the font's built-in
     // spacing, if avalible.
     if (lh.isNegative() && font().primaryFont())
         return getFontMetrics().lineSpacing();
 
-    if (lh.hasPercent())
+    if (lh.isPercentOrCalc())
         return minimumValueForLength(lh, LayoutUnit(computedFontSize())).toInt();
 
     return std::min(lh.value(), LayoutUnit::max().toFloat());
 }
 
 void ComputedStyle::setWordSpacing(float wordSpacing)
 {
     FontSelector* currentFontSelector = font().getFontSelector();
     FontDescription desc(getFontDescription());
     desc.setWordSpacing(wordSpacing);
@@ skipping 517 matching lines @@
         if (value < 0)
             fvalue -= 0.5f;
         else
             fvalue += 0.5f;
     }
 
     return roundForImpreciseConversion<int>(fvalue / zoomFactor);
 }
 
 } // namespace blink