Add 4 more passing tests to CFI buildbot.
Add 4 more passing tests to CFI buildbot.

This CL has a moderate chance of breaking the CFI buildbot:
while I don't observe any CFI failures, browser_tests and
interactive_ui_tests are extremely flaky on my machine,
so I could miss some.

Should the buildbot be broken, I will quickly remove the
failing tests.

BUG=chromium:457523

Review URL: https://codereview.chromium.org/1272563003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#342372}

ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend