Roll Skia from 6087a5224c6f to 6807d8b8a9d3 (2 revisions) (#44250)

https://skia.googlesource.com/skia.git/+log/6087a5224c6f..6807d8b8a9d3

2023-08-02 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SK Tool from b65d24de9b8d to 17b4158d1701
2023-08-02 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Skia Infra from a0873d3f0d98 to b65d24de9b8d (8 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 brianosman@google.com,jacksongardner@google.com,jvanverth@google.com,rmistry@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

DEPS

@@ -18,7 +18,7 @@ vars = {
   'llvm_git': 'https://llvm.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': '6087a5224c6f2c343e4c03446ac79fae865dfa04',
+  'skia_revision': '6807d8b8a9d36473398a5b05c95dd414fb1429d9',
 
   # 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: 378fda84ee71d98a7f270245131c2187
+Signature: 80e2654d3471329391b2e82ee81e58a6
 
 ====================================================================================================
 LIBRARY: etc1