I caused this in bug 1217870. This caused the Sunspider test on https://arewefastyet.com/#machine=26 to fail: https://github.com/nbp/gaia-ui-tests/blob/bench/gaiatest/tests/browser/benchmarks/test_bench_sunspider.py#L19
The fix in running_apps was also needed for me to get test_bench_sunspider.py working (and there was another unrelated issue which I saw, but I'm working already on that in another bug).
I saw this also failing in test_browser_clear_browsing_history.py, so we would have caused this failure in our own tests, too.
Comment on attachment 8680071 [details] [review] [gaia] mwargers:1219279 > mozilla-b2g:master If it runs, it looks good to me. let me know if you want me to test it out locally.
Comment on attachment 8680071 [details] [review] [gaia] mwargers:1219279 > mozilla-b2g:master Looks good to me. Sorry I missed the lambda during the review.