Roll Skia from 6e7083de3589 to b92d53afbead (2 revisions) (#19765)

https://skia.googlesource.com/skia.git/+log/6e7083de3589..b92d53afbead

2020-07-15 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ANGLE from d98afb787a24 to 4ad0f250a010 (9 revisions)
2020-07-15 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Chromium from 2a68959faa37 to c28de0e53968 (434 revisions)

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 nifong@google.com 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/master/autoroll/README.md

DEPS

@@ -26,7 +26,7 @@ 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': '6e7083de35896583a5142830d38922bda7dbac1f',
+  'skia_revision': 'b92d53afbead991906561ac8c9fe3d5e0f140515',
 
   # 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: 27d5f04462e8d5734e71c1a84a47f449
+Signature: e1635faab83105d15ebdeb3659b99a85
 
 UNUSED LICENSES: