Roll Skia from 1c9b0b9141e9 to 63dbf37c3700 (1 revision) (flutter#185533)

https://skia.googlesource.com/skia.git/+log/1c9b0b9141e9..63dbf37c3700

2026-04-24 kjlubick@google.com Reject SkRegions with multiple empty
slices in a row

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 jimgraham@google.com,jlavrova@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': '1c9b0b9141e951a8aeeb934eeccd50157c363288',
+  'skia_revision': '63dbf37c3700b34b5050d418d7cc9a3cb1708d5b',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.