Roll Skia from 6f87de7c272d to 22ef2257c862 (8 revisions)

https://skia.googlesource.com/skia.git/+log/6f87de7c272d..22ef2257c862

2020-10-27 johnstiles@google.com Update the SkSL pool interface to take an allocation size.
2020-10-27 brianosman@google.com Guard traversal of certain kinds of mid-optimization IfStatement
2020-10-27 johnstiles@google.com Pass function arguments using SkSpan instead of count + ptr.
2020-10-27 egdaniel@google.com Add uma histogram tracking for the number of submit render passes.
2020-10-27 johnstiles@google.com Prototype helper functions from FP files before use.
2020-10-27 johnstiles@google.com Mangle function names as a separate step before emitting func-bodies.
2020-10-27 mtklein@google.com remove absl experiment
2020-10-27 mtklein@google.com use ieee divide

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 jcgregorio@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: jcgregorio@google.com
Change-Id: I36a14fa5a94bdb5234174fc7ade1331c3ada37d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2502840Reviewed-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@{#821367}

DEPS

@@ -206,7 +206,7 @@ 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': '6f87de7c272d572e6420010bfb704bb2a15e8810',
+  'skia_revision': '22ef2257c8624e2383876c6fbb641162fe520228',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.