Roll Skia from d78865e708ad to 70733f74d415 (2 revisions) (#190168)

https://skia.googlesource.com/skia.git/+log/d78865e708ad..70733f74d415

2026-07-28 michaelludwig@google.com [graphite] Start refactoring
Layer::test for more early-out conditions
2026-07-28 borenet@google.com Revert "[infra] Remove all remaining
references to gsutil"

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 aaclarke@google.com,bwils@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
diff --git a/DEPS b/DEPS
index 7da095c..0a00491 100644
--- a/DEPS
+++ b/DEPS
@@ -16,7 +16,7 @@
   'skia_git': 'https://skia.googlesource.com',
   'llvm_git': 'https://llvm.googlesource.com',
   'dart_ai_rev': '9c96bfe5f091c9451eff5b59c9bffeb2e806b875',
-  'skia_revision': 'd78865e708ad437e46dcfc382ebd39e00dcc78c1',
+  'skia_revision': '70733f74d415bf389f6bda812e95e8aee6182664',
 
   # Do not download the Emscripten SDK by default.
   # This prevents us from downloading the Emscripten toolchain for builds