fuchsia: Add fidlgen_js_unittests to bots

Bug: 883496
Change-Id: If98ab4445ef5ee1a02d7c6bb1e5f4e3e770cfeba
Reviewed-on: https://chromium-review.googlesource.com/c/1287205
Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Scott Graham <scottmg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600977}
4 files changed