Roll src/third_party/skia 3c0ad02bc545..9e6a3d76fc7f (4 commits) (#9167)

https://skia.googlesource.com/skia.git
/%2Blog/3c0ad02bc545..9e6a3d76fc7f

git log 3c0ad02bc545e5891f042f266d8892df342f62ea..9e6a3d76fc7ffd086a5968d5742d5ff6e9bf84ba --date=short --no-merges --format=%ad %ae %s
2019-06-03 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 0a56f0e3d22d..98f2167125a8 (8 commits)
2019-06-03 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader c0d7ee45d45f..bb575d48d5f9 (3 commits)
2019-06-03 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 8e522297bf91..f75363e40fb1 (402 commits)
2019-06-01 bsalomon@google.com SkVector4 as ctype for half4

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 (jcgregorio@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': '3c0ad02bc545e5891f042f266d8892df342f62ea',
+  'skia_revision': '9e6a3d76fc7ffd086a5968d5742d5ff6e9bf84ba',
 
   # 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: 4a6d63b6e269ff40d8b4f800c18cc422
+Signature: 841681bb1002f9a0f3b4914b471ff813
 
 UNUSED LICENSES: