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Conley Owens authoredThese tests were not functioning correctly because `assert_throws` was not being passed an Error. Furthermore, the use of the `expected.txt` file is brittle since it includes a warning output with a line number. BUG=769404 Change-Id: Ie867e6b99fc87d7c9b8b7259684f2ddd3cdc37a2 Reviewed-on: https://chromium-review.googlesource.com/688295Reviewed-by: Vincent Scheib <scheib@chromium.org> Commit-Queue: Conley Owens <cco3@chromium.org> Cr-Commit-Position: refs/heads/master@{#505429} ced8acfc