Fixes bug if Select-to-Speak gets two key down events for the same key.

Bug: 921110
Change-Id: I54066effe96f07b3183a50a3d1fca1bd891e50fc
Reviewed-on: https://chromium-review.googlesource.com/c/1407654
Reviewed-by: Anastasia Helfinstein <anastasi@google.com>
Commit-Queue: Katie Dektar <katie@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622208}
1 file changed