GitLab

Change one more native layer message to cr.sendWithPromise and adjust
tests to use browser proxy for this message instead of triggering an
event.

BUG=717296
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2919693002
Cr-Commit-Position: refs/heads/master@{#476503}