Roll Skia from 6bc126d24d1b to a28795fd64a4 (2 revisions)

https://skia.googlesource.com/skia.git/+log/6bc126d24d1b..a28795fd64a4

2021-08-08 [email protected] Update SKP version
2021-08-08 [email protected] Roll SK Tool from 1a08f231f874 to 78fa1b60ce0c

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 [email protected] 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/+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': '6bc126d24d1be28c2d870aa4e68e716cda082667',
+  'skia_revision': 'a28795fd64a43fa9840d5e8263e24f6ce5650f6f',
 
   # 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

@@ -1,4 +1,4 @@
-Signature: 2d556f5db8be06e3fd6191843f895976
+Signature: 277a423836425e1cf995f24834807085
 
 UNUSED LICENSES: