[Webkit-unassigned] [Bug 99707] New: [CSSRegions] broken feature detection: body.webkitRegionOverset and body.webkitGetRegionFlowRanges shouldn't succeed when disabled at runtime

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=99707

           Summary: [CSSRegions] broken feature detection:
                    body.webkitRegionOverset and
                    body.webkitGetRegionFlowRanges shouldn't succeed when
                    disabled at runtime
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptGlue
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mmaerean at adobe.com


Steps to reproduce:
disable experimental WebKit features (in about://flags/).
access document.body.webkitRegionOverset and document.body.webkitGetRegionFlowRanges from JavaScript.

Expected result:
an exception should occur because the function should not exist.

Actual result:
the call is successful.

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