Roll Skia from c26cf6c2f589 to c7774a779fac (4 revisions)

https://skia.googlesource.com/skia.git/+log/c26cf6c2f589..c7774a779fac

2021-08-27 ethannicholas@google.com Switched SymbolTable.fErrorReporter over to .fContext
2021-08-27 johnstiles@google.com Treat uninvoked external-function-references as errors.
2021-08-27 brianosman@google.com Remove (unused) geometry shader support
2021-08-27 johnstiles@google.com Migrate function-body finalization out of IRGenerator.

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 herb@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://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

DEPS

@@ -27,7 +27,7 @@ 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': 'c26cf6c2f589266edf60b9d3784408ac8664cd4d',
+  'skia_revision': 'c7774a779fac4379921b858bf5b61da09755c071',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: 591a85359569f2464fd8c2985d7bca36
+Signature: 2a1c65f9707fe94ec46fb1858efa9c5d
 
 UNUSED LICENSES:
 
@@ -1090,7 +1090,6 @@ FILE: ../../../third_party/skia/src/core/SkOrderedReadBuffer.h
 FILE: ../../../third_party/skia/src/ports/SkTLS_pthread.cpp
 FILE: ../../../third_party/skia/src/ports/SkTLS_win.cpp
 FILE: ../../../third_party/skia/src/sksl/generated/sksl_frag.dehydrated.sksl
-FILE: ../../../third_party/skia/src/sksl/generated/sksl_geom.dehydrated.sksl
 FILE: ../../../third_party/skia/src/sksl/generated/sksl_gpu.dehydrated.sksl
 FILE: ../../../third_party/skia/src/sksl/generated/sksl_interp.dehydrated.sksl
 FILE: ../../../third_party/skia/src/sksl/generated/sksl_public.dehydrated.sksl
@@ -1101,7 +1100,6 @@ FILE: ../../../third_party/skia/src/sksl/generated/sksl_runtime.dehydrated.sksl
 FILE: ../../../third_party/skia/src/sksl/generated/sksl_vert.dehydrated.sksl
 FILE: ../../../third_party/skia/src/sksl/lex/sksl.lex
 FILE: ../../../third_party/skia/src/sksl/sksl_frag.sksl
-FILE: ../../../third_party/skia/src/sksl/sksl_geom.sksl
 FILE: ../../../third_party/skia/src/sksl/sksl_gpu.sksl
 FILE: ../../../third_party/skia/src/sksl/sksl_public.sksl
 FILE: ../../../third_party/skia/src/sksl/sksl_rt_blend.sksl
@@ -3031,6 +3029,7 @@ FILE: ../../../third_party/skia/src/sksl/ir/SkSLExpressionStatement.cpp
 FILE: ../../../third_party/skia/src/sksl/ir/SkSLFieldAccess.cpp
 FILE: ../../../third_party/skia/src/sksl/ir/SkSLForStatement.cpp
 FILE: ../../../third_party/skia/src/sksl/ir/SkSLFunctionCall.cpp
+FILE: ../../../third_party/skia/src/sksl/ir/SkSLFunctionDefinition.cpp
 FILE: ../../../third_party/skia/src/sksl/ir/SkSLIfStatement.cpp
 FILE: ../../../third_party/skia/src/sksl/ir/SkSLIndexExpression.cpp
 FILE: ../../../third_party/skia/src/sksl/ir/SkSLPostfixExpression.cpp