Roll Chrome Linux PGO Profile

Roll Chrome Linux PGO profile from chrome-linux-master-1608959458-28df8a1bc542c31f63caed86a7684759d7cfff27.profdata to chrome-linux-master-1608981831-b7308299b7b6d5423a4cf5a7ee308e0158657b54.profdata

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/pgo-linux-chromium
Please CC pgo-profile-sheriffs@google.com 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

Cq-Include-Trybots: luci.chrome.try:linux-chrome
Tbr: pgo-profile-sheriffs@google.com
Change-Id: Ifa2f054b3ebade31c5ca6689f7289ca8108dab75
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2604004Reviewed-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@{#839356}

chrome/build/linux.pgo.txt

-chrome-linux-master-1608959458-28df8a1bc542c31f63caed86a7684759d7cfff27.profdata
+chrome-linux-master-1608981831-b7308299b7b6d5423a4cf5a7ee308e0158657b54.profdata