Roll Skia from ef8d52d8b2bb to 396974683cbd (5 revisions) (#22548)

DEPS

@@ -26,7 +26,7 @@ vars = {
   'skia_git': 'https://skia.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': 'ef8d52d8b2bb0952e719a78b339f2438c6d7663e',
+  'skia_revision': '396974683cbde3b0cc8e00385ef44960ba829b8f',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the

ci/licenses_golden/licenses_skia

-Signature: 760db62211d5c4cc4a82651463317b0a
+Signature: af967cfeeb3993820fe134803aee6444
 
 UNUSED LICENSES:
 
@@ -3931,6 +3931,8 @@ FILE: ../../../third_party/skia/src/gpu/GrBlockAllocator.cpp
 FILE: ../../../third_party/skia/src/gpu/GrBlockAllocator.h
 FILE: ../../../third_party/skia/src/gpu/GrClipStack.cpp
 FILE: ../../../third_party/skia/src/gpu/GrClipStack.h
+FILE: ../../../third_party/skia/src/gpu/GrDDLTask.cpp
+FILE: ../../../third_party/skia/src/gpu/GrDDLTask.h
 FILE: ../../../third_party/skia/src/gpu/GrManagedResource.cpp
 FILE: ../../../third_party/skia/src/gpu/GrRingBuffer.cpp
 FILE: ../../../third_party/skia/src/gpu/GrRingBuffer.h
@@ -3940,7 +3942,6 @@ FILE: ../../../third_party/skia/src/gpu/GrStencilMaskHelper.cpp
 FILE: ../../../third_party/skia/src/gpu/GrStencilMaskHelper.h
 FILE: ../../../third_party/skia/src/gpu/GrUniformDataManager.cpp
 FILE: ../../../third_party/skia/src/gpu/GrUniformDataManager.h
-FILE: ../../../third_party/skia/src/gpu/GrUnrefDDLTask.h
 FILE: ../../../third_party/skia/src/gpu/GrUtil.cpp
 FILE: ../../../third_party/skia/src/gpu/GrYUVABackendTextures.cpp
 FILE: ../../../third_party/skia/src/gpu/d3d/GrD3DAMDMemoryAllocator.cpp