Roll Skia from 1cbc0e6a7d21 to 43d2020be565 (7 revisions) (flutter#179010)

https://skia.googlesource.com/skia.git/+log/1cbc0e6a7d21..43d2020be565

2025-11-24 ccameron@chromium.org Add skhdr::Agtm::applyGain and
skhdr::Agtm::makeColorFilter functions
2025-11-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
vulkan-deps from 727d988c641f to 8b5c5c1780de (1 revision)
2025-11-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
jsfiddle-base from e739450ff483 to ef6c6a80c82e
2025-11-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Skia
Infra from 8376a0b41a33 to 7e3710ea589f (6 revisions)
2025-11-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
debugger-app-base from 4fab2c75015c to 9c01087f9cc7
2025-11-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Dawn
from b91c63fc4078 to c3ddae38156b (2 revisions)
2025-11-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
shaders-base from a05e895e8ba2 to 77cefc24c76a

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 codefu@google.com,fmalita@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

Author: engine-flutter-autoroll

DEPS

@@ -15,7 +15,7 @@ vars = {
   'flutter_git': 'https://flutter.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
   'llvm_git': 'https://llvm.googlesource.com',
-  'skia_revision': '1cbc0e6a7d211ab7fea1bea1ee4af985fe755639',
+  'skia_revision': '43d2020be565ffd5a0df1d86d61d8b554d4c395b',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.