Roll skia 7fa8f3a4f3cc..7321e6a0abd3 (1 commits)

https://skia.googlesource.com/skia.git/+log/7fa8f3a4f3cc..7321e6a0abd3

git log 7fa8f3a4f3cc..7321e6a0abd3 --date=short --first-parent --format='%ad %ae %s'
2019-12-03 mtklein@google.com replace CSXformSteps::Required() in GrSurfaceContext

Created with:
  gclient setdep -r skia@7321e6a0abd3

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: I848d4002b88f4ecf162ad77447bfb6e703265314
Tbr: borenet@google.com
Reviewed-on: https://skia-review.googlesource.com/c/lottie-ci/+/257671
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 932af26..d9675ce 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': '7fa8f3a4f3ccc8b1828fd03d4f26cfda0ed0bf51',
+  'skia_revision': '7321e6a0abd3e989aaaacdc81ec369c5fc2421b5',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.