This unit test fails with PlzNavigate. Since the codepaths are non-aura, I couldn't debug it on Windows. I tried debugging it on mac trybots but couldn't make progress.

Stuff like this is usually caused because the unit test harness doesn't wait long enough. I tried adding a webcontentsobserver to wait for DidFinishNavigate since that's what ContentTranslateDriver waits for, but that didn't work. See https://codereview.chromium.org/2714773002/#ps1.

Since it's just one test, and almost certainly a test harness issue, I'm going to disable it in the meantime so it doesn't block PlzNavigate switchover.