[Sync::USS] Fix for PasswordSyncBridge crashes when AddLoginSync()

PasswordSyncBridge works under the assumption that it knows all entries
in the LoginDatabase, therefore any AddLoginSync() should return
exactly one change.

This doesn't look to be the case.

This CL is relaxing that assumptionfor now till the underlying issue
is discovered.

Bug: 939302
Change-Id: Ic0f6a11c439f29314149a39cbbd91288e1d909a6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1508093
Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638570}
1 file changed