[Webkit-unassigned] [Bug 80338] New: Add a method to window.internals to enable testing of inspector highlight rects

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=80338

           Summary: Add a method to window.internals to enable testing of
                    inspector highlight rects
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mvujovic at adobe.com
            Blocks: 78037


In Bug 78037, the inspector highlight rects for SVG root elements are drawn with incorrect positions and sizes. Here is a screenshot: https://bug-78037-attachments.webkit.org/attachment.cgi?id=128501

To enable a regression test for this bug, I would like to expose the positions and sizes of the inspector highlight rects via a new method, window.internals.inspectorHighlightRects. This method would return a ClientRectList.

Originally, I wanted to create a pixel test. However, the inspector highlight rects are drawn on a page overlay layer, which DRT does not capture in its snapshot of the window. We could modify DRT for all of the platforms in order to capture the page overlay layer, but a window.internals API would be a much less expensive solution.

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