Mark unsafe libc calls in next batch of files

Iterative process to reduce the initial set of warnings. Use
UNSAFE_TODO() unless include rules preclude compiler_spcific.h,
in which case use the file-wide pragma.

Bug: 390223051
Change-Id: I0b4d6020dd30a5184ebd8178996d047205476d39
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6362954
Reviewed-by: Alex Gough <[email protected]>
Owners-Override: Alex Gough <[email protected]>
Commit-Queue: Tom Sepez <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1433839}
NOKEYCHECK=True
GitOrigin-RevId: a20bb6a8dca060615716ce9c432f18de6732c7c2
2 files changed