[Sync::USS] Test that Password's progress marker is persisted

This CL adds a browser test that the progress marker is properly
persisted across restarts.

Bug: 902349
Change-Id: I6a116a132ac066fa388bd4f08eb7fe93540c0e2b
Reviewed-on: https://chromium-review.googlesource.com/c/1448330
Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#628298}
1 file changed