[Webkit-unassigned] [Bug 86805] New: Web Inspector: CSS profiles don't include time spent in element.webkitMatchesSelector

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=86805

           Summary: Web Inspector: CSS profiles don't include time spent
                    in element.webkitMatchesSelector
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: aroben at webkit.org
                CC: timothy at apple.com, rik at webkit.org, keishi at webkit.org,
                    pmuellr at yahoo.com, joepeck at webkit.org,
                    pfeldman at chromium.org, yurys at chromium.org,
                    bweinstein at apple.com, apavlov at chromium.org,
                    loislo at chromium.org


It looks like CSS profile data is only collected in WebCore::StyleResolver member functions. But StyleResolver isn't used for element.webkitMatchesSelector. For that we need to instrument WebCore::Element::webkitMatchesSelector (surprise!).

It would be great to include webkitMatchesSelector time in CSS profiles. Bonus points if it's somehow separable from other kinds of time like style recalcs.

See also bug 86804.

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