Roll src/third_party/skia 68219bfacaa8..dcf3a9b3dce1 (1 commits)

https://skia.googlesource.com/skia.git/+log/68219bfacaa8..dcf3a9b3dce1

git log 68219bfacaa8..dcf3a9b3dce1 --date=short --first-parent --format='%ad %ae %s'
2020-04-09 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader ba0c95eb406f..3cfa8e28be80 (9 commits)

Created with:
  gclient setdep -r src/third_party/skia@dcf3a9b3dce1

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-autoroll
Please CC csmartdalton@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

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux-blink-rel;luci.chromium.try:linux-chromeos-compile-dbg;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Bug: None
Tbr: csmartdalton@google.com
Change-Id: I6ad6415c9d1de5c36b337938f67bab9a2623e421
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2143552Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#757736}

DEPS

@@ -175,7 +175,7 @@ vars = {
   # 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': '68219bfacaa82884cc34815b2cc43966fa0f3c31',
+  'skia_revision': 'dcf3a9b3dce1d3a165e2dde5bb8a91e61a850731',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.