Roll skia 3912a4b1da55..3d8172509ea8 (1 commits)

https://skia.googlesource.com/skia.git/+log/3912a4b1da55..3d8172509ea8

git log 3912a4b1da55..3d8172509ea8 --date=short --first-parent --format='%ad %ae %s'
2020-01-14 mtklein@google.com remove obsolete presubmit checks

Created with:
  gclient setdep -r skia@3d8172509ea8

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-lottie-ci-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/+/master/autoroll/README.md

TBR=borenet@google.com

Cq-Include-Trybots: skia/skia.primary:Housekeeper-PerCommit-InfraTests
Bug: None
Change-Id: I5624b1322aca246e2ac9a8a506b828d62c298779
Tbr: borenet@google.com
Reviewed-on: https://skia-review.googlesource.com/c/lottie-ci/+/264348
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 5cf6150..81a07ff 100644
--- a/DEPS
+++ b/DEPS
@@ -11,7 +11,7 @@
   # 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': '3912a4b1da5579e0508edf270f75982719f1c001',
+  'skia_revision': '3d8172509ea8355adcb74038d8b39930715e87e2',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.