Roll src/third_party/skia 705e67347962..9159c8ef83b2 (1 commits) (#8014)

https://skia.googlesource.com/skia.git/%2Blog/705e67347962..9159c8ef83b2

git log 705e67347962f9b76d9a4aafcc21b8781b45d632..9159c8ef83b2b333551f68664f9fb50fc266c822 --date=short --no-merges --format=%ad %ae %s
2019-03-02 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 6f1a852fce0b..4d153383bd3a (1 commits)

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 (scroggo@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': '705e67347962f9b76d9a4aafcc21b8781b45d632',
+  'skia_revision': '9159c8ef83b2b333551f68664f9fb50fc266c822',
 
   # 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: f7e13ab4be87bd6c4206f27f9a484860
+Signature: 8d6cea6aa16d0318dcbc001d404da797
 
 UNUSED LICENSES: