Roll Skia from 0f4f31127ac5 to 2991bb799d3f (1 revision) (#46319)

https://skia.googlesource.com/skia.git/+log/0f4f31127ac5..2991bb799d3f

2023-09-27 jiulongw@vibe.us Link standard GL function for pthread proxy to work

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,bungeman@google.com,jacksongardner@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

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': '0f4f31127ac5b38598af0fceb468f63e0f9c2ef6',
+  'skia_revision': '2991bb799d3f2bf29019e318b44d02d272053b29',
 
   # 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: 3bcff2b24f2444fb2c9c279e13cdfbe8
+Signature: 6020e668c927317afad6db97318d29d0
 
 ====================================================================================================
 LIBRARY: etc1