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The setup of these tests should not be testing for speech. Instead
if speech doesn't work, the test cases will catch it.

Bug: 742592
Change-Id: I656a40ae8a304ac1161941929d88409aacc144ae
Reviewed-on: https://chromium-review.googlesource.com/599590
Commit-Queue: Doug Turner <dougt@chromium.org>
Reviewed-by: Alice Boxhall <aboxhall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491903}