Add Length::isPercent and use it in tables.

third_party/WebKit/Source/core/svg/SVGLengthContext.cpp

 /*
  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. 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 193 matching lines @@
 }
 
 float SVGLengthContext::valueForLength(const Length& length, const ComputedStyle& style, SVGLengthMode mode) const
 {
     return valueForLength(length, style.effectiveZoom(), mode);
 }
 
 float SVGLengthContext::valueForLength(const Length& length, float zoom, SVGLengthMode mode) const
 {
     float dimension = 0;
-    if (length.hasPercent()) {
+    if (length.isPercentOrCalc()) {
         FloatSize viewportSize;
         determineViewport(viewportSize);
         // The viewport will be unaffected by zoom.
         dimension = dimensionForLengthMode(mode, viewportSize);
     }
     return valueForLength(length, zoom, dimension);
 }
 
 float SVGLengthContext::valueForLength(const Length& length, const ComputedStyle& style, float dimension)
 {
@@ skipping 201 matching lines @@
 
     const ComputedStyle* rootStyle = rootElementStyle(m_context);
     if (!rootStyle)
         return 0;
 
     CSSToLengthConversionData conversionData = CSSToLengthConversionData(style, rootStyle, m_context->document().layoutViewItem(), 1.0f);
     Length length = primitiveValue.convertToLength(conversionData);
     return valueForLength(length, 1.0f, mode);
 }
 } // namespace blink