We have a pretty thorough autofill test suite in test_autofill_origins.js and test_autofill_urls.js, but it's a little unrealistic because many of the test tasks run with a single URL in history. This caused us to miss bug 1489060, for example. It would be better to test with a more realistic history. I'm not thinking of anything complicated, just including a couple of other URLs with the same origin being tested and one or two other URLs with a different origin.
Not actually a P1 priority, setting to something more realistic
Priority: P1 → P3
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