Roll src/third_party/skia 9431161ca973..969659dbb313 (3 commits) (#7921)

https://skia.googlesource.com/skia.git/%2Blog/9431161ca973..969659dbb313

git log 9431161ca9733f15f21a7ccb1e11ea6ef1cf883f..969659dbb3137fb3b5c55e5fc46ec071b6fb5b96 --date=short --no-merges --format=%ad %ae %s
2019-02-22 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 962c222aa3be..b9039bf76bf3 (2 commits)
2019-02-21 recipe-roller@chromium.org Roll recipe dependencies (trivial).
2019-02-22 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update go_deps asset

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff (jvanverth@google.com), and stop
the roller if necessary.

DEPS

@@ -23,7 +23,7 @@ vars = {
   'fuchsia_git': 'https://fuchsia.googlesource.com',
   'github_git': 'https://github.com',
   'skia_git': 'https://skia.googlesource.com',
-  'skia_revision': '9431161ca9733f15f21a7ccb1e11ea6ef1cf883f',
+  'skia_revision': '969659dbb3137fb3b5c55e5fc46ec071b6fb5b96',
 
   # 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: 9ea4dd59adc75be2c007bc82703f8946
+Signature: 7ec1704ea8cbad17a4734d26f42577b0
 
 UNUSED LICENSES: