Migrate most remaining NOTREACHED()

This s/NOTREACHED()/NOTREACHED_IN_MIGRATION() for most of remaining
src/. Then I went through all changes and made sure that we didn't do
this for comments or "NOTREACHED(): " log strings.

Rolling in the corresponding change for remaining third_party/crashpad
is separately up for review.

Bug: 40580068
Low-Coverage-Reason: TRIVIAL_CHANGE Unreachable code is not reachable.
Change-Id: I707e582b710bf65474db2e3477fa06f5b8d8ea06
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5545807
Owners-Override: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1302866}
NOKEYCHECK=True
GitOrigin-RevId: 188188db8b3f38a3ab1526b1e831dc60e5d7ca56
2 files changed