Move viewport unit resolution to style recalc time

Source/core/css/resolver/StyleBuilderCustom.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
@@ skipping 262 matching lines @@
         lineHeight = RenderStyle::initialLineHeight();
     } else if (primitiveValue->isLength()) {
         float multiplier = state.style()->effectiveZoom();
         if (Frame* frame = state.document().frame())
             multiplier *= frame->textZoomFactor();
         lineHeight = primitiveValue->computeLength<Length>(state.cssToLengthConversionData().copyWithAdjustedZoom(multiplier));
     } else if (primitiveValue->isPercentage()) {
         lineHeight = Length((state.style()->computedFontSize() * primitiveValue->getIntValue()) / 100.0, Fixed);
     } else if (primitiveValue->isNumber()) {
         lineHeight = Length(primitiveValue->getDoubleValue() * 100.0, Percent);
-    } else if (primitiveValue->isViewportPercentageLength()) {
-        lineHeight = primitiveValue->viewportPercentageLength();
     } else if (primitiveValue->isCalculated()) {
         double multiplier = state.style()->effectiveZoom();
         if (Frame* frame = state.document().frame())
             multiplier *= frame->textZoomFactor();
         Length zoomedLength = Length(primitiveValue->cssCalcValue()->toCalcValue(state.cssToLengthConversionData().copyWithAdjustedZoom(multiplier)));
         lineHeight = Length(valueForLength(zoomedLength, state.style()->fontSize()), Fixed);
     } else {
         return;
     }
     state.style()->setLineHeight(lineHeight);
@@ skipping 1884 matching lines @@
         break;
     }
     case CSSPropertyEnableBackground:
         // Silently ignoring this property for now
         // http://bugs.webkit.org/show_bug.cgi?id=6022
         break;
     }
 }
 
 } // namespace WebCore