Roll Chromite from 4d016f6ec38a to b1f8c4c6c78a (5 revisions)

https://chromium.googlesource.com/chromiumos/chromite.git/+log/4d016f6ec38a..b1f8c4c6c78a

2021-10-20 manojgupta@google.com cros_fuzz_unittest: Fix the test
2021-10-20 kimjae@chromium.org cli: Remote cros flash miniOS partitions
2021-10-20 azrahman@google.com firmware: add firmware build location for cr50
2021-10-20 azrahman@google.com build api protos: compiled build api protos
2021-10-20 manojgupta@google.com cros_fuzz: Fix issues with coverage

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/chromite-chromium-autoroll
Please CC chrome-os-gardeners@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Chromium: https://bugs.chromium.org/p/chromium/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Cq-Include-Trybots: luci.chrome.try:chromeos-betty-pi-arc-chrome;luci.chromium.try:chromeos-kevin-rel
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Change-Id: Ic497e906f4d5a00f8b93d9b55d0aae6c5186541d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3236916
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