Roll Skia from 620de5ac9f6b to 6aaef9cbc3af (1 revision) (flutter#43441)

https://skia.googlesource.com/skia.git/+log/620de5ac9f6b..6aaef9cbc3af

2023-07-06 [email protected] [graphite] Remove vanilla asyncReadPixels interface from Context.

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],[email protected],[email protected],[email protected] 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

@@ -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': '620de5ac9f6b9d47862dd1f2a09dc595c812ba87',
+  'skia_revision': '6aaef9cbc3af0e867db410239f9e348088ee81e9',
 
   # 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: b30c6ac2ad2b99f32de7de9d7754faf9
+Signature: ce509041b4314510eb6ae41c157234b0
 
 ====================================================================================================
 LIBRARY: etc1