Roll Skia from a650ce2b0d50 to f70bcbf1b090 (1 revision) (#180860)

https://skia.googlesource.com/skia.git/+log/a650ce2b0d50..f70bcbf1b090

2026-01-12 kjlubick@google.com Rename gni group to be libpng specific

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 jsimmons@google.com,kjlubick@google.com,thomsmit@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

diff --git a/DEPS b/DEPS
index b9bec9c..a8cf371 100644
--- a/DEPS
+++ b/DEPS
@@ -15,7 +15,7 @@
   'flutter_git': 'https://flutter.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
   'llvm_git': 'https://llvm.googlesource.com',
-  'skia_revision': 'a650ce2b0d503e4319280e324af79aa5afb47b70',
+  'skia_revision': 'f70bcbf1b090bb2ee96bc2066566996d9dd86335',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.