Xidorn Quan 4cf9aed667 Bug 1449400 part 5 - Remove StyleSetHandle. r=emilio
This patch basically does:
* remove StyleSetHandle and its corresponding files
* revisit #includes of related header files and change correspondingly
* change nsIPresShell::mStyleSet to be UniquePtr<ServoStyleSet>
* change the creating path of ServoStyleSet to pass UniquePtr
* change other mentions of StyleSetHandle to ServoStyleSet*
* remove AsServo() calls on ServoStyleSet

Some unfortunate bits:
* some methods of (Servo)StyleSet only accepts ServoStyleSheet while
  many places call into the methods with StyleSheet, so there are many
  ->AsServo() added to sheets

MozReview-Commit-ID: K4zYnuhOurA

--HG--
extra : rebase_source : 459e8efeb171adad089d94272e143e8c244bd279
extra : source : 65ba2f174fcf7dba4e59c00ee8908b1bd0820a48
2018-03-29 22:15:46 +11:00
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