Roll Skia from 0c2cc2356170 to 986c7fb8caea (6 revisions)

https://skia.googlesource.com/skia.git/+log/0c2cc2356170..986c7fb8caea

2020-12-01 johnstiles@google.com Fix codegen errors with Metal return statements.
2020-12-01 brianosman@google.com Add ByteCode output to skslc
2020-12-01 johnstiles@google.com Enforce layout(location=...) on Metal out variables.
2020-12-01 herb@google.com remove use of initial matrix
2020-12-01 johnstiles@google.com Disallow global variables containing arrays of opaque types.
2020-12-01 ethannicholas@google.com Created SKSL_USE_THREAD_LOCAL define

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 westont@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: westont@google.com
Change-Id: Ie10d6a9a6a150ac30a1bfa5c5b58962d9437301b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2566789Reviewed-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@{#832588}

DEPS

@@ -200,7 +200,7 @@ 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': '0c2cc2356170d4a39d5d587fbb340f59e91b5d07',
+  'skia_revision': '986c7fb8caea0cace5634c46d89324ea8ac2a58a',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.