Reland "Make NOTREACHED_IN_MIGRATION non-fatal"

This reverts commit 9a1b28586ce4c5f5b68be4d119e1860a61a3d7d8.

Reason for revert: Updated the patch avoid build failure

Original change's description:
> Revert "Make NOTREACHED_IN_MIGRATION non-fatal"
>
> This reverts commit 72248f1d1188a2dc61822f65686ea2b571cc8185.
>
> Reason for revert: 129 release builds failing for libchrome
>
> Original change's description:
> > Make NOTREACHED_IN_MIGRATION non-fatal
> >
> > BUG=b:367556630
> > TEST=CQ
> >
> > Change-Id: I3eebfc618a0b05bd0b20225a1c53e602ad443789
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/libchrome/+/5869630
> > Reviewed-by: Grace Cham <hscham@chromium.org>
> > Tested-by: Ryo Hashimoto <hashimoto@chromium.org>
> > Commit-Queue: Ryo Hashimoto <hashimoto@chromium.org>
> > (cherry picked from commit 993a5c378d314e807faa8c3b1848cc4073038dbd)
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/libchrome/+/5872403
> > Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
>
> BUG=b:367556630
>
> Change-Id: If10d7c368efe6e696e77add919d0bed789672f38
> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/libchrome/+/5883013
> Tested-by: Aaron Massey <aaronmassey@google.com>
> Reviewed-by: Aaron Massey <aaronmassey@google.com>
> Commit-Queue: Aaron Massey <aaronmassey@google.com>
> Owners-Override: Aaron Massey <aaronmassey@google.com>
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>

BUG=b:367556630
TEST=emerge-hatch chromeos-base/libchrome

Change-Id: I1595be30667a596ac4aef57563e000dca5ad8ae6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/libchrome/+/5890184
Tested-by: Ryo Hashimoto <hashimoto@chromium.org>
Reviewed-by: Aaron Massey <aaronmassey@google.com>
Commit-Queue: Ryo Hashimoto <hashimoto@chromium.org>