Mark timeline-auto-record as flaky in more virtual suites

TBR=caseq@chromium.org
BUG=344238

Review URL: https://codereview.chromium.org/213263003

git-svn-id: svn://svn.chromium.org/blink/trunk@170084 bbb929c8-8fbe-4397-9dbb-9b2b20218538