Add fuzzer for TtsPlatform on Mac/Win

Bug: none
Change-Id: I3c5f6e3aeea9bfb6b9c00be89b807c2a603cddac
Reviewed-on: https://chromium-review.googlesource.com/c/1340869
Commit-Queue: Dominic Mazzoni <dmazzoni@chromium.org>
Reviewed-by: Jonathan Metzman <metzman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609032}
4 files changed