Roll src/third_party/skia dac43e8ad366..748197e6959a (3 commits)

https://skia.googlesource.com/skia.git/+log/dac43e8ad366..748197e6959a

git log dac43e8ad366..748197e6959a --date=short --first-parent --format='%ad %ae %s'
2020-04-17 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go Deps
2020-04-17 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 59d22330..41c6b825 (406 commits)
2020-04-17 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 2430d665d3f2..d25ce8725224 (18 commits)

Created with:
  gclient setdep -r src/third_party/skia@748197e6959a

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 kjlubick@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: kjlubick@google.com
Change-Id: I4742654b30f9dde48805cd26e815b890b5bd953e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2153669Reviewed-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@{#759966}

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': 'dac43e8ad366aee043a2433f2c05acda47096dd9',
+  'skia_revision': '748197e6959a5679a7aca5b0260e0d4fa7be4559',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.