calc expressions should support time, angle and frequency values.

Source/core/css/CSSPrimitiveValue.cpp

Index: Source/core/css/CSSPrimitiveValue.cpp
diff --git a/Source/core/css/CSSPrimitiveValue.cpp b/Source/core/css/CSSPrimitiveValue.cpp
index 97497512b54f0998dcdb5db4aa75bc3e921d1921..80585ab17b212717e412c39a059525bc26b562c7 100644
--- a/Source/core/css/CSSPrimitiveValue.cpp
+++ b/Source/core/css/CSSPrimitiveValue.cpp
@@ -216,6 +216,10 @@ CSSPrimitiveValue::UnitType CSSPrimitiveValue::primitiveType() const
         return static_cast<UnitType>(m_primitiveUnitType);
 
     switch (m_value.calc->category()) {
+    case CalcAngle:
+        return CSS_DEG;
+    case CalcFrequency:
+        return CSS_HZ;
     case CalcNumber:
         return CSS_NUMBER;
     case CalcPercent:
@@ -226,6 +230,8 @@ CSSPrimitiveValue::UnitType CSSPrimitiveValue::primitiveType() const
         return CSS_CALC_PERCENTAGE_WITH_NUMBER;
     case CalcPercentLength:
         return CSS_CALC_PERCENTAGE_WITH_LENGTH;
+    case CalcTime:
+        return CSS_MS;
     case CalcOther:
         return CSS_UNKNOWN;
     }
@@ -545,6 +551,8 @@ double CSSPrimitiveValue::computeDegrees()
         return grad2deg(getDoubleValue());
     case CSS_TURN:
         return turn2deg(getDoubleValue());
+    case CSS_CALC:

[alancutter (OOO until 2018), 2014/07/02 05:56:10]

Similar comments as for computeTime(), this should ASSERT that the calc holds an
angle.

+        return getDoubleValue();
     default:
         ASSERT_NOT_REACHED();
         return 0;