Roll src/third_party/skia 507736fc3abf..ee3216d8f835 (2 commits) (#15750)

https://skia.googlesource.com/skia.git/+log/507736fc3abf..ee3216d8f835

git log 507736fc3abf..ee3216d8f835 --date=short --first-parent --format='%ad %ae %s'
2020-01-18 reed@google.com Use SkSL to do point-light shading
2020-01-18 bsalomon@google.com Make decimating and non-decimating cases in SkGpuBlurUtils call into common function.

Created with:
  gclient setdep -r src/third_party/skia@ee3216d8f835

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

Bug: None
Tbr: mtklein@google.com

DEPS

@@ -26,7 +26,7 @@ vars = {
   'skia_git': 'https://skia.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': '507736fc3abf64397887c6e63728a666e700710d',
+  'skia_revision': 'ee3216d8f8358d8cbb43427b4f421cca5ea1ad20',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the

ci/licenses_golden/licenses_skia

-Signature: 9d510de8301d889846a648e1a08b616e
+Signature: f0b8f2da6338d4e4d2e618fd85d6a359
 
 UNUSED LICENSES: