Roll Skia from a4768487bc88 to 1f6b4de40147 (1 revision)

https://skia.googlesource.com/skia.git/+log/a4768487bc88..1f6b4de40147

2022-06-15 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from bea8d2471bd9 to 20c04524ee8a (1 revision)

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 johnstiles@google.com,kaushikiska@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Skia: https://bugs.chromium.org/p/skia/issues/entry
To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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/+doc/main/autoroll/README.md

Author: skia-flutter-autoroll

DEPS

@@ -27,7 +27,7 @@ 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': 'a4768487bc8829cd4ed6c7d9bab68f0a9c124a35',
+  'skia_revision': '1f6b4de4014784409325b051604e2f9b5b9537e7',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: 121aed22f1c60b3a5eafe3927c8d6ed8
+Signature: f216cc3b34a2b5b078cd42e40b619dc7
 
 UNUSED LICENSES: