Roll Skia from c49da0b5192d to 82f373c0d713 (6 revisions)

https://skia.googlesource.com/skia.git/+log/c49da0b5192d..82f373c0d713

2020-10-20 johnstiles@google.com Wrap built-in symbol tables when an IRNode is cloned.
2020-10-20 johnstiles@google.com Fix typo in class name.
2020-10-20 robertphillips@google.com Make GrFillRectOp::onPrePrepareDraws also call base class' version
2020-10-20 adlai@google.com Reland "Remove GrContext"
2020-10-20 robertphillips@google.com Rename some of GrThreadSafeCache's member variables
2020-10-20 abarth@google.com [fuchsia] Migrate to new zx::vmar::map method

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 egdaniel@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: chromium:1108408
Tbr: egdaniel@google.com
Change-Id: I6d86a87ccb5421b03aa0f43cc3ba7b29b390ed51
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2487808Reviewed-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@{#819094}

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': 'c49da0b5192d7ab601b3e33f04390780beccfb5f',
+  'skia_revision': '82f373c0d7135b213f2d5b10a0b7bf7eade8ad97',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.