Revert "Roll Chrome Mac PGO Profile"

This reverts commit 1ae2f731.

Reason for revert: a bunch of mac failures after this cl
https://ci.chromium.org/p/chromium/builders/ci/Mac10.11%20Tests/56167

Original change's description:
> Roll Chrome Mac PGO Profile
>
> Roll Chrome Mac PGO profile from chrome-mac-master-1603238376-a0754723f0cd6eaa7fc2494ab4a5f08c0cee1720.profdata to chrome-mac-master-1603259905-71f19f253a8b5311fb57e85e7e87c615112024a2.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: I092ce3c9f4cd2ab9d88dc393650ef291295c22f5
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2487957
> Reviewed-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@{#819285}

TBR=chromium-autoroll@skia-public.iam.gserviceaccount.com,pgo-profile-sheriffs@google.com

Change-Id: Ia80fef015149557138e163db69d5b0529dc0da5b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Cq-Include-Trybots: luci.chrome.try:mac-chrome
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2489620
Commit-Queue: Anatoliy Potapchuk <apotapchuk@chromium.org>
Reviewed-by: Anatoliy Potapchuk <apotapchuk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819306}

chrome/build/mac.pgo.txt

-chrome-mac-master-1603259905-71f19f253a8b5311fb57e85e7e87c615112024a2.profdata
+chrome-mac-master-1603238376-a0754723f0cd6eaa7fc2494ab4a5f08c0cee1720.profdata