Two tests were marked as flaky because they were missing the updated
expectations.

This CL removes them from the TestExpectations and add rebases the
missing expectation files.

Bug: 990918
Change-Id: I3e33204fca1d5e93a73c4c2167a016fb41a694ca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2180879Reviewed-by: Fernando Serboncini <fserb@chromium.org>
Commit-Queue: Juanmi Huertas <juanmihd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776046}