Roll Skia from c777fdc55adc to 8c4c06605277 (2 revisions) (#165378)

https://skia.googlesource.com/skia.git/+log/c777fdc55adc..8c4c06605277

2025-03-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ANGLE
from 5c2789e0f185 to ae71cc1cd4ca (4 revisions)
2025-03-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Dawn
from f3e167f819c5 to 9ddc965c0836 (15 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
chinmaygarde@google.com,jvanverth@google.com,kjlubick@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://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

DEPS

@@ -14,7 +14,7 @@ vars = {
   'flutter_git': 'https://flutter.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
   'llvm_git': 'https://llvm.googlesource.com',
-  'skia_revision': 'c777fdc55adcb3e8c704cbb94dcbdbdcf7311b40',
+  'skia_revision': '8c4c06605277d000cee693838f4640a3ce4f6fcc',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.