Roll Chrome Mac PGO Profile

Roll Chrome Mac PGO profile from chrome-mac-master-1601747662-aa0833df9950e479c66f1878f4ef2b694f168602.profdata to chrome-mac-master-1601768226-4aa6062ecef01021544b7e6f50efb2698ce5de9c.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-mac-chromium
Please CC sebmarchand@chromium.org,jeffyoon@google.com,liaoyuke@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:mac-chrome
Tbr: sebmarchand@chromium.org,jeffyoon@google.com,liaoyuke@google.com
Change-Id: Ib727ced1dc0714cd523d35749ca5533420c0a32d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2447627Reviewed-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@{#813543}

chrome/build/mac.pgo.txt

-chrome-mac-master-1601747662-aa0833df9950e479c66f1878f4ef2b694f168602.profdata
+chrome-mac-master-1601768226-4aa6062ecef01021544b7e6f50efb2698ce5de9c.profdata