Roll Skia from a6648599b594 to 38a6e5aa1a49 (1 revision)

https://skia.googlesource.com/skia.git/+log/a6648599b594..38a6e5aa1a49

2021-07-20 csmartdalton@google.com Reland "Enable vertex ID support on Metal"

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: I761f337ff8adb58fec9530d9ac5f324dafc5cecf
Reviewed-on: https://skia-review.googlesource.com/c/skiabot-test/+/430299
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 ce256ba..016d603 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': 'a6648599b594d225f5020d6c7428dcec41439934',
+  'skia_revision': '38a6e5aa1a49e7ff66e2728d17deb034c9944aeb',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.