Roll Skia from c61843470d89 to b9d078716d40 (1 revision) (flutter/engine#51804)

https://skia.googlesource.com/skia.git/+log/c61843470d89..b9d078716d40

2024-04-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Skia Infra from 33ace26e29f4 to df0949e75440 (8 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 brianosman@google.com,jacksongardner@google.com,kjlubick@google.com,rmistry@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': 'c61843470d89de81c571d87ed2c810911edeb1a3',
+  'skia_revision': 'b9d078716d40de1a5add4a79f53dac14573b66d0',
 
   # 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: a5548041dd7d90f3a435c91bd478cbe6
+Signature: 379fc4bc2e2ef8621d57643e049a7e6b
 
 ====================================================================================================
 LIBRARY: etc1