Roll Skia from 52d06100a044 to 6912d66c0c7a (1 revision) (#164526)

https://skia.googlesource.com/skia.git/+log/52d06100a044..6912d66c0c7a

2025-03-04 lokokung@google.com [dawn][headers] Removes use of ifdef for
Descriptor change.

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 kjlubick@google.com,matanl@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

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': '52d06100a044877d985442dadf5d2f810f7cc74c',
+  'skia_revision': '6912d66c0c7a475486fdda75f5f0a738cb6509ad',
 
   # 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: abb1614e0262e68aa744d6c4fa9ece53
+Signature: bca5a4bcc3e034474a3f88a935f5f370
 
 ====================================================================================================
 LIBRARY: etc1