Roll Skia from 8c337a36b2e8 to 4f09dd47da6e (2 revisions)

https://skia.googlesource.com/skia.git/+log/8c337a36b2e8..4f09dd47da6e

2020-10-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from b042f4e70879 to 5e947adaf26e (4 revisions)
2020-10-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Chromium from cc47e0cd to 085332bf (612 revisions)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-autoroll
Please CC brianosman@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.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux-blink-rel;luci.chromium.try:linux-chromeos-compile-dbg;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Cq-Do-Not-Cancel-Tryjobs: true
Bug: None
Tbr: brianosman@google.com
Change-Id: I028599affda72b7b2ac2353a7a1eb6f339e0ffef
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2442418Reviewed-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@{#812597}

DEPS

@@ -195,7 +195,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': '8c337a36b2e85634f96134527e01f273657322fb',
+  'skia_revision': '4f09dd47da6ee00643d15de9396dceceef5439df',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.