Test calling getPropertyValue on computed styles for border radius properties.

getPropertyValue(-webkit-border-top-right-radius): 10px 20px
getPropertyCSSValue(-webkit-border-top-right-radius): [object CSSValueList]
getPropertyValue(-webkit-border-top-right-radius): 10px
getPropertyCSSValue(-webkit-border-top-right-radius): [object CSSPrimitiveValue]
getPropertyValue(-webkit-border-top-left-radius): 10px 20px
getPropertyCSSValue(-webkit-border-top-left-radius): [object CSSValueList]
getPropertyValue(-webkit-border-top-left-radius): 10px
getPropertyCSSValue(-webkit-border-top-left-radius): [object CSSPrimitiveValue]
getPropertyValue(-webkit-border-bottom-right-radius): 10px 20px
getPropertyCSSValue(-webkit-border-bottom-right-radius): [object CSSValueList]
getPropertyValue(-webkit-border-bottom-right-radius): 10px
getPropertyCSSValue(-webkit-border-bottom-right-radius): [object CSSPrimitiveValue]
getPropertyValue(-webkit-border-bottom-left-radius): 10px 20px
getPropertyCSSValue(-webkit-border-bottom-left-radius): [object CSSValueList]
getPropertyValue(-webkit-border-bottom-left-radius): 10px
getPropertyCSSValue(-webkit-border-bottom-left-radius): [object CSSPrimitiveValue]

Test getting 0px value border radius.
getPropertyValue(-webkit-border-top-left-radius): 0px
getPropertyCSSValue(-webkit-border-top-left-radius): [object CSSPrimitiveValue]
getPropertyValue(-webkit-border-top-left-radius): 0px
getPropertyCSSValue(-webkit-border-top-left-radius): [object CSSPrimitiveValue]