Many methods here compute a value and return it without modifying any sort of state in the class. In these cases we can make them const so that they can be used whenever other code uses a const ComputedStyleExtractor
<rdar://problem/114099664>
Pull request: https://github.com/WebKit/WebKit/pull/16841
Committed 267055@main (f5c4eacf1b68): <https://commits.webkit.org/267055@main> Reviewed commits have been landed. Closing PR #16841 and removing active labels.