Roll Skia from 2d25d28e51b0 to 7729e0a97ec3 (3 revisions)

https://skia.googlesource.com/skia.git/+log/2d25d28e51b0..7729e0a97ec3

2021-07-13 johnstiles@google.com Add hints to slicing-constructor error messages.
2021-07-13 johnstiles@google.com Add static to global nullopt symbol.
2021-07-13 robertphillips@google.com Make GrAuditTrail V1-only

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: I65ab6a3825939d9c450c91ab0cfee60984fdbd66
Reviewed-on: https://skia-review.googlesource.com/c/skiabot-test/+/427403
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 6a597bc..912e630 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': '2d25d28e51b043b277a3e8c35a3101db95c1e72c',
+  'skia_revision': '7729e0a97ec36a34207ca74c1dde8136c6b89724',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.