* Add calc method to calculate formula value with parent size
* Add unit test case
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Please see this issue: https://github.com/servo/servo/issues/15986
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Source-Repo: https://github.com/servo/servo
Source-Revision: 418c3e8cc74b561c9c704da4dfdfb74681bf42a1
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account for sign in double parsing inside styles attr.rs
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When sign was present during double parsing correctly jump forward the
extra character when parsing fraction and exponent.
Source-Repo: https://github.com/servo/servo
Source-Revision: 1f34d4f219a8d237acbf02737343ce520d73fd7a
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Source-Revision: 2f9796fa696e9514280777398467696dd4f004b3
The function is only used in the 'style' component, so we'll move it
there alongside other relevant parse functions.
Source-Repo: https://github.com/servo/servo
Source-Revision: f2f05869d6ccd445df9b73e2e8d038c6cfa9e687
