石博文 22f99c71b9 Add to_computed method for CalcLengthOrPercentage ... * Add to_computed method to calculate `calc()` value with parent size, if parent container size is `None`, the result will be `None`. * Add from_option method for `MaybeAuto`, to construct from `Option<Au>`. * Update some test case.		2017-04-24 14:22:14 +08:00
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html	Add to_computed method for CalcLengthOrPercentage	2017-04-24 14:22:14 +08:00