Roll Skia from 56bb647a49ac to 76672468e8d7 (3 revisions) (#45121)

https://skia.googlesource.com/skia.git/+log/56bb647a49ac..76672468e8d7

2023-08-25 johnstiles@google.com Remove gn flag 'skia_enable_sksl'.
2023-08-25 michaelludwig@google.com Replace GrMatrixConvolutionEffect with GrSkSLFP runtime effect
2023-08-25 johnstiles@google.com Revert "Make empty GN lists for Ganesh Dawn."

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,jimgraham@google.com,lovisolo@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': '56bb647a49acd2a5f60689d7342ea83cebb85aeb',
+  'skia_revision': '76672468e8d743634e948669cb1cbcbc9e470e86',
 
   # 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: 9919b825607c67a2cc28ac5b6174b6e6
+Signature: 5efa1dcecbf13cdcfbcd6b3326510a7c
 
 ====================================================================================================
 LIBRARY: etc1
@@ -2728,8 +2728,6 @@ ORIGIN: ../../../third_party/skia/src/gpu/ganesh/effects/GrCoverageSetOpXP.cpp +
 ORIGIN: ../../../third_party/skia/src/gpu/ganesh/effects/GrCoverageSetOpXP.h + ../../../third_party/skia/LICENSE
 ORIGIN: ../../../third_party/skia/src/gpu/ganesh/effects/GrDisableColorXP.cpp + ../../../third_party/skia/LICENSE
 ORIGIN: ../../../third_party/skia/src/gpu/ganesh/effects/GrDisableColorXP.h + ../../../third_party/skia/LICENSE
-ORIGIN: ../../../third_party/skia/src/gpu/ganesh/effects/GrMatrixConvolutionEffect.cpp + ../../../third_party/skia/LICENSE
-ORIGIN: ../../../third_party/skia/src/gpu/ganesh/effects/GrMatrixConvolutionEffect.h + ../../../third_party/skia/LICENSE
 ORIGIN: ../../../third_party/skia/src/gpu/ganesh/effects/GrOvalEffect.cpp + ../../../third_party/skia/LICENSE
 ORIGIN: ../../../third_party/skia/src/gpu/ganesh/effects/GrOvalEffect.h + ../../../third_party/skia/LICENSE
 ORIGIN: ../../../third_party/skia/src/gpu/ganesh/effects/GrPorterDuffXferProcessor.cpp + ../../../third_party/skia/LICENSE
@@ -2894,8 +2892,6 @@ FILE: ../../../third_party/skia/src/gpu/ganesh/effects/GrCoverageSetOpXP.cpp
 FILE: ../../../third_party/skia/src/gpu/ganesh/effects/GrCoverageSetOpXP.h
 FILE: ../../../third_party/skia/src/gpu/ganesh/effects/GrDisableColorXP.cpp
 FILE: ../../../third_party/skia/src/gpu/ganesh/effects/GrDisableColorXP.h
-FILE: ../../../third_party/skia/src/gpu/ganesh/effects/GrMatrixConvolutionEffect.cpp
-FILE: ../../../third_party/skia/src/gpu/ganesh/effects/GrMatrixConvolutionEffect.h
 FILE: ../../../third_party/skia/src/gpu/ganesh/effects/GrOvalEffect.cpp
 FILE: ../../../third_party/skia/src/gpu/ganesh/effects/GrOvalEffect.h
 FILE: ../../../third_party/skia/src/gpu/ganesh/effects/GrPorterDuffXferProcessor.cpp