Roll Skia from 928a02b1527d to f48dfd985712 (5 revisions)

https://skia.googlesource.com/skia.git/+log/928a02b1527d..f48dfd985712

2020-09-01 mtklein@google.com Revert "debug LSAN failures"
2020-09-01 herb@google.com fix unsigned compare against zero
2020-09-01 reed@google.com plumb cubic params into gpu backend
2020-09-01 bsalomon@google.com Separate our use of sampler object from GL support.
2020-09-01 herb@google.com maintain the page index in AtlasLocator

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 michaelludwig@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: michaelludwig@google.com
Change-Id: I615b479f340c3d771b3e278053e44ca4ef9c8762
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2388860Reviewed-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@{#803649}

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': '928a02b1527da2a47bec23e98aa6c06c3277f760',
+  'skia_revision': 'f48dfd985712182ed18996062255c5d0feafb9fb',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.