Roll src/third_party/skia 2fade72a4ea2..933926683991 (5 commits)

https://skia.googlesource.com/skia.git/+log/2fade72a4ea2..933926683991

git log 2fade72a4ea2..933926683991 --date=short --first-parent --format='%ad %ae %s'
2020-03-20 bungeman@google.com Infer NodeType in attachDiscardableAdapter.
2020-03-20 csmartdalton@google.com Call incNumDraws() after all draw calls in mtl
2020-03-20 csmartdalton@google.com Release deferred buffers in GrOpsRenderPass::end()
2020-03-20 brianosman@google.com Remove unused (and misleading) 'instruction' from SkSLInterpreter.h
2020-03-20 jvanverth@google.com Reland "Reland "Clear out atlases if they haven't been used in a while.""

Created with:
  gclient setdep -r src/third_party/skia@933926683991

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/+/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
Bug: chromium:1058905
Tbr: egdaniel@google.com
Change-Id: I72b6ff49bb29d4fd185bf0426bccfa3fb2c3b089
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2112976Reviewed-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@{#752185}

DEPS

@@ -175,7 +175,7 @@ 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': '2fade72a4ea2a6ca635137e7718b7d5ce6eab474',
+  'skia_revision': '93392668399146a92385e2a01857de669f5b956f',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.