Roll Skia from efb5a5e0b78b to c4805a975ab3 (2 revisions) (#44795)

https://skia.googlesource.com/skia.git/+log/efb5a5e0b78b..c4805a975ab3

2023-08-17 [email protected] Roll ANGLE from 152cf62b3887 to 78de02ab5230 (6 revisions)
2023-08-17 [email protected] Roll SK Tool from f1d21dc58818 to 76d835d26b04

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': 'efb5a5e0b78bdd54679ebb62c1c0c4f773bbfaa4',
+  'skia_revision': 'c4805a975ab34177522973b677bb97e8f2d3cf86',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.