calc expressions should support time, angle and frequency values.

Source/core/css/resolver/CSSToStyleMap.cpp

 /*
  * 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 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.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 273 matching lines @@
         ASSERT_NOT_REACHED();
     }
 
     layer->setMaskSourceType(type);
 }
 
 double CSSToStyleMap::mapAnimationDelay(CSSValue* value)
 {
     if (value->isInitialValue())
         return CSSTimingData::initialDelay();
-    return toCSSPrimitiveValue(value)->computeTime<double, CSSPrimitiveValue::Seconds>();
+    return toCSSPrimitiveValue(value)->computeSeconds();
 }
 
 Timing::PlaybackDirection CSSToStyleMap::mapAnimationDirection(CSSValue* value)
 {
     if (value->isInitialValue())
         return CSSAnimationData::initialDirection();
 
     switch (toCSSPrimitiveValue(value)->getValueID()) {
     case CSSValueNormal:
         return Timing::PlaybackDirectionNormal;
     case CSSValueAlternate:
         return Timing::PlaybackDirectionAlternate;
     case CSSValueReverse:
         return Timing::PlaybackDirectionReverse;
     case CSSValueAlternateReverse:
         return Timing::PlaybackDirectionAlternateReverse;
     default:
         ASSERT_NOT_REACHED();
         return CSSAnimationData::initialDirection();
     }
 }
 
 double CSSToStyleMap::mapAnimationDuration(CSSValue* value)
 {
     if (value->isInitialValue())
         return CSSTimingData::initialDuration();
-    return toCSSPrimitiveValue(value)->computeTime<double, CSSPrimitiveValue::Seconds>();
+    return toCSSPrimitiveValue(value)->computeSeconds();
 }
 
 Timing::FillMode CSSToStyleMap::mapAnimationFillMode(CSSValue* value)
 {
     if (value->isInitialValue())
         return CSSAnimationData::initialFillMode();
 
     switch (toCSSPrimitiveValue(value)->getValueID()) {
     case CSSValueNone:
         return Timing::FillModeNone;
@@ skipping 262 matching lines @@
         verticalRule = SpaceImageRule;
         break;
     default: // CSSValueRepeat
         verticalRule = RepeatImageRule;
         break;
     }
     image.setVerticalRule(verticalRule);
 }
 
 };