Roll Skia from 391429f78b8c to ad858e76e339 (2 revisions)

https://skia.googlesource.com/skia.git/+log/391429f78b8c..ad858e76e339

2021-07-22 kjlubick@google.com [canvaskit] Fix gm compilation
2021-07-22 robertphillips@google.com Feed all top-level GPU accessors through skgpu::BaseDevice

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-skiabot-test-autoroll
Please CC borenet@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/main/autoroll/README.md

Tbr: borenet@google.com
Change-Id: I63d8f58d04abdb3bd6b9e5bb5b9219f81e3c2016
Reviewed-on: https://skia-review.googlesource.com/c/skiabot-test/+/431443
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 62f7b69..d1ec8c4 100644
--- a/DEPS
+++ b/DEPS
@@ -3,7 +3,7 @@
   # 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': '391429f78b8c1d0fddd6d0d50fcc1c2bd58a3db0',
+  'skia_revision': 'ad858e76e339d37743c0c389b061f88599663ecf',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.