GitLab

Add a third earcon for dictation cancelled, and modify which earcon
plays when so the user is more aware of the current dictation state.

Bug: 801398
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I3af2dd619e493e7697be5b5628539d9f6a56c7f1
Reviewed-on: https://chromium-review.googlesource.com/1040364Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Zach Helfinstein <zhelfins@chromium.org>
Cr-Commit-Position: refs/heads/master@{#555797}