This method always calls the FATAL macro, which is also marked
[[noreturn]]. The documentation already mentioned this, but now it's
actually enforced by the compiler.

R=adamk@chromium.org

Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I2e331c9826fad6aad9c22929a0d5f890a508d0d9
Reviewed-on: https://chromium-review.googlesource.com/966561Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52115}