It was inconsistent with gecko side and also we needed to pass nsCompatibility enum along with URLExtraData.
MozReview-Commit-ID: 2ceutBfqBrg
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extra : rebase_source : f342774ed349c65f377cf85865f5905520784ca5
Adds `ServoPageRule` for use as the CSSOM representation of @page rules parsed
by Servo.
MozReview-Commit-ID: 7AIErJmoZN
--HG--
extra : rebase_source : f47448b9053e6a49023799631ca1d36f058272f4