LayoutTests/fast/repaint/resources/repaint.js

// Note: pixel based repaint tests are now deprecated. Please use text-based-repaint.js in new repaint tests.
function runRepaintTest()
{
    if (window.testRunner) {
        if (document.body)
            document.body.offsetTop;
        else if (document.documentElement)
            document.documentElement.offsetTop;

        testRunner.displayAndTrackRepaints();
        repaintTest();
    } else {
        setTimeout(repaintTest, 100);
    }
}