Speculative fixes for flakey ChromeVox tests using waitForCalm

Bug: 622387
Change-Id: Idddd32bf271f28fb5d22cbef54b4250e636e2f6f
Reviewed-on: https://chromium-review.googlesource.com/c/1372312
Commit-Queue: Dominic Mazzoni <dmazzoni@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615963}
2 files changed