[Webkit-unassigned] [Bug 255443] New: Avoid useless copy of CSSSelectorList when there is no nesting parent selector to resolve

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=255443

            Bug ID: 255443
           Summary: Avoid useless copy of CSSSelectorList when there is no
                    nesting parent selector to resolve
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: m_dubet at apple.com

We should optimize the most frequent case (non nested rule) by avoiding an unnecessary copy.

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