Roll ChromeOS Silvermont AFDO profile from 87-4265.0-1601890590-benchmark-87.0.4280.17-r1 to 87-4277.0-1602498224-benchmark-87.0.4280.18-r1

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/cros-afdo-silvermont-chromium-beta
Please CC [email protected] 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/+doc/master/autoroll/README.md

Tbr: [email protected]
Change-Id: I816b66aba63255a336d4360ecaa8dc96d5e0c9bf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2466328
Reviewed-by: Chrome Release Autoroll <[email protected]>
Commit-Queue: Chrome Release Autoroll <[email protected]>
Cr-Commit-Position: refs/branch-heads/4280@{#261}
Cr-Branched-From: ea420fb963f9658c9969b6513c56b8f47efa1a2a-refs/heads/master@{#812852}
diff --git a/chromeos/profiles/silvermont.afdo.newest.txt b/chromeos/profiles/silvermont.afdo.newest.txt
index ad711bcd..171a12f 100644
--- a/chromeos/profiles/silvermont.afdo.newest.txt
+++ b/chromeos/profiles/silvermont.afdo.newest.txt
@@ -1 +1 @@
-chromeos-chrome-amd64-silvermont-87-4265.0-1601890590-benchmark-87.0.4280.17-r1-redacted.afdo.xz
+chromeos-chrome-amd64-silvermont-87-4277.0-1602498224-benchmark-87.0.4280.18-r1-redacted.afdo.xz