[Webkit-unassigned] [Bug 76337] New: Cache CSSStyleSelector::Features in RuleSets

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=76337

           Summary: Cache CSSStyleSelector::Features in RuleSets
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: koivisto at iki.fi


Currently whenever the style selector is updated we go through all the applicable rules and collect the used features again. We should keep the features around as part of the RuleSets and update them incrementally. Collecting the features will then be just a matter of taking the union of all features used by the RuleSets.

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