Bug 256647 – [css-nesting] Serialize properties directly in parent group rule only (for the first nested style rule)

• Component: WebCore Misc.
• Status: RESOLVED FIXED

[Matthieu Dubet]

Orphaned properties in group rules are implicitly added to a style rule with '&' as selector ; this implicit rule should not be serialized.

foo {
    @media screen {
        color: green;
    }
}

is implemented as 

foo {
    @media screen {
        & {
            color: green;
        }
    }
}

but this should not appear in the CSS OM serialization

[Radar WebKit Bug Importer]

<rdar://problem/109208359>

[Matthieu Dubet]

Pull request: https://github.com/WebKit/WebKit/pull/13758

[EWS]

Committed 264003@main (e07871e21ea8): <https://commits.webkit.org/264003@main>

Reviewed commits have been landed. Closing PR #13758 and removing active labels.

[EWS]

Committed 259548.767@safari-7615-branch (168b349a71f0): <https://commits.webkit.org/259548.767@safari-7615-branch>

Reviewed commits have been landed. Closing PR #603 and removing active labels.