Roll AFDO from 81.0.4005.0_rc-r1-merged to 81.0.4008.0_rc-r1-merged

This CL may cause a small binary size increase, roughly proportional
to how long it's been since our last AFDO profile roll. For larger
increases (around or exceeding 100KB), please file a bug against
gbiv@chromium.org. Additional context: https://crbug.com/805539

Please note that, despite rolling to chrome/android, this profile is
used for both Linux and Android.

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

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/+/master/autoroll/README.md

Tbr: gbiv@chromium.org
Change-Id: I995c4ece354ddd66bbb55aebcd201b5b7b9eb097
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1983182Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#727560}

chrome/android/profiles/newest.txt

-chromeos-chrome-amd64-81.0.4005.0_rc-r1-merged.afdo.bz2
\ No newline at end of file
+chromeos-chrome-amd64-81.0.4008.0_rc-r1-merged.afdo.bz2
\ No newline at end of file