Fix order of blocking calls on FillEventHistoryTest.

We should always call sReplier.getNextFillRequest() before making a UI
assertion, otherwise the later can fail.

Test: commented out the RetryRule @Rule on AutoFillServiceTestCase and ran
      FillEventHistoryTest - without this fix, it would consistenly fail.

Bug: 37566627

Change-Id: Id4cc7ebdf831cf788c0ffebe05235e0fde13a06c
2 files changed