Roll Chrome Mac PGO Profile

Roll Chrome Mac PGO profile from chrome-mac-master-1606996231-ba5c68d71497939eb8f18cb3a40e45fa42cfdc85.profdata to chrome-mac-master-1607018334-4ec258faf10b8c54ec4574a66b7b864fdc99dca8.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 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:mac-chrome
Tbr: pgo-profile-sheriffs@google.com
Change-Id: I47d38fb93adb231391c4b9f3b666a93c40c7b524
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2571749Reviewed-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@{#833432}

chrome/build/mac.pgo.txt

-chrome-mac-master-1606996231-ba5c68d71497939eb8f18cb3a40e45fa42cfdc85.profdata
+chrome-mac-master-1607018334-4ec258faf10b8c54ec4574a66b7b864fdc99dca8.profdata