Roll Skia from 7d2732a4d909 to 3f6dfab8ed54 (2 revisions) (#171619)

https://skia.googlesource.com/skia.git/+log/7d2732a4d909..3f6dfab8ed54

2025-07-04 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Dawn
from f11197d3fd47 to 10305223e3f2 (17 revisions)
2025-07-04 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Skia
Infra from ca3ad4399108 to d527cfae35f3 (2 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 codefu@google.com,kjlubick@google.com,michaelludwig@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

@@ -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': '7d2732a4d909680542e8387aee6d9846bf08a3ce',
+  'skia_revision': '3f6dfab8ed544f787f15fe34bb6980d867e22fe3',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

engine/src/flutter/ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: d9133a38aee3f703a17ad1ec79300b74
+Signature: e09d3c16ae601d04c324cc6fc4980742
 
 ====================================================================================================
 LIBRARY: etc1