Noticed this on two bots:
Linux Release (NVIDIA Quadro P400):
https://luci-milo.appspot.com/buildbot/chromium.gpu.fyi/Linux%20Release%20%28NVIDIA%20Quadro%20P400%29/562

and Android Release (NVIDIA Shield TV):
https://luci-milo.appspot.com/buildbot/chromium.gpu.fyi/Android%20Release%20%28NVIDIA%20Shield%20TV%29/1299

Might be because of this commit: ff77c359221485886b8207e8afd23c11e0768cf4 (Refactor multisample framebuffer completeness checks.)
https://chromium.googlesource.com/angle/angle/+/ff77c359221485886b8207e8afd23c11e0768cf4
https://chromium-review.googlesource.com/c/508221/

ynovikov@ can you confirm and revert if necessary? Thanks!