Roll src/third_party/skia 8ac25c44cbe8..9e1e913c81cd (5 commits)

https://skia.googlesource.com/skia.git/+log/8ac25c44cbe8..9e1e913c81cd

git log 8ac25c44cbe8..9e1e913c81cd --date=short --first-parent --format='%ad %ae %s'
2020-04-15 michaelludwig@google.com Add rect subtraction utility function+tests
2020-04-15 jvanverth@google.com Allow to Metal to build with Xcode 10 again.
2020-04-15 mtklein@google.com start on operand refactoring
2020-04-15 tdenniston@google.com [svg] Fix translate() with no ty specified.
2020-04-15 jlavrova@google.com MinIntrinsicWidth should ignore placeholders

Created with:
  gclient setdep -r src/third_party/skia@9e1e913c81cd

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: I9a407fb504b04d3b5327edffc50e85a180fcb2ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2151626Reviewed-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@{#759450}

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': '8ac25c44cbe820b5f6f8b14328662c7cbb26478b',
+  'skia_revision': '9e1e913c81cd3acb4b82fa1e0d4ad47e5711fd29',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.