GitLab

Debug bots became flaky with the notification turned on (crash in the
V8 idle handler). Disabling by default.

NOTRY=True
TBR=zmo@chromium.org,jochen@chromium.org
BUG=414815

Review URL: https://codereview.chromium.org/586523002

Cr-Commit-Position: refs/heads/master@{#295581}