[Webkit-unassigned] [Bug 190627] New: Some WK1 repaint tests are flakey

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=190627

            Bug ID: 190627
           Summary: Some WK1 repaint tests are flakey
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: lforschler at apple.com

compositing/repaint/iframes/compositing-iframe-scroll-repaint.html is flakey (maybe only with the patch from bug 90342).

When it breaks, the compositing layer already has a repaint, so in GraphicsLayerCA::setNeedsDisplayInRect() the dirty rects already contain the rect and we bail.

This suggests that testRunner.displayAndTrackRepaints() isn't triggering paints in all compositing layers in WK1; need to see if we're flushing layers at all in that code path.

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