GitLab

* chrome_public_test_apk at 50%
* chrome_public_smoke_test at 100%
* weblayer_unittests at 100%
* webview_ui_test_app_test_apk at 100%

Since now there are about 800 (http://shortn/_JqmfiRDZkq) test devices
in the pool which is even more than the amount before
the outage (690, http://shortn/_ABaTS4EnNU), we can add the test suites
more aggressively.

Also re-organize the compound test suite for android-pie-arm64-rel
to make it easier to re-enable test suites.

Bug: 1111436
Change-Id: I456046376d76c1632a74fdfc68862b234c741132
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2611650Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Haiyang Pan <hypan@google.com>
Cr-Commit-Position: refs/heads/master@{#841629}