Roll Skia from b1807129a628 to c021360a88f9 (3 revisions)

https://skia.googlesource.com/skia.git/+log/b1807129a628..c021360a88f9

2020-10-07 brianosman@google.com Only include one variable per declaration statement
2020-10-07 johnstiles@google.com Remove accidentally repeated bit-index expression.
2020-10-07 mtklein@google.com refactor HashAndEncode

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 jvanverth@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
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Bug: None
Tbr: jvanverth@google.com
Change-Id: I406821ee793ba6e61be03deeba0a54dd0191c83f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2457392Reviewed-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@{#814824}

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': 'b1807129a62889c6bb3fa600f177e3be52c07f71',
+  'skia_revision': 'c021360a88f98a2c944854d46e92feccd936f3d8',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.