Roll skia 1321a3d1e2f2..b0855273ab7b (2 commits)

https://skia.googlesource.com/skia.git/+log/1321a3d1e2f2..b0855273ab7b

git log 1321a3d1e2f2..b0855273ab7b --date=short --first-parent --format='%ad %ae %s'
2020-01-16 robertphillips@google.com Add SkImage::CompressionType::kBC1_RGBA8_UNORM support
2020-01-16 csmartdalton@google.com Fix single-pass tessellator wedges

Created with:
  gclient setdep -r skia@b0855273ab7b

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: Ic1195f1cd068a6d7af08770dab07484fe3444ff4
Tbr: borenet@google.com
Reviewed-on: https://skia-review.googlesource.com/c/lottie-ci/+/264883
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 875ebc5..d5557a6 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': '1321a3d1e2f219e4e36a3b1b5b58e1cfac4008b9',
+  'skia_revision': 'b0855273ab7bf62d43b45ed141ca4b175e2aa8da',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.