Roll src/third_party/skia a09731e5cf3e..41169206c475 (4 commits) (#7626)

https://skia.googlesource.com/skia.git/%2Blog/a09731e5cf3e..41169206c475

git log a09731e5cf3e946e960482102f636a84d7018c39..41169206c475f8c83542b565001ca830b5467b04 --date=short --no-merges --format=%ad %ae %s
2019-01-29 scroggo@google.com Do not build SkGifCodec when building SkWuffsCodec
2019-01-29 bsalomon@google.com Limit Analytic Clip FP workaround to powervr rogue on x86
2019-01-29 robertphillips@google.com Revert "Split GrContextThreadSafeProxy into its own files"
2019-01-25 robertphillips@google.com Split GrContextThreadSafeProxy into its own files

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff (borenet@google.com), and stop
the roller if necessary.

DEPS

@@ -23,7 +23,7 @@ vars = {
   'fuchsia_git': 'https://fuchsia.googlesource.com',
   'github_git': 'https://github.com',
   'skia_git': 'https://skia.googlesource.com',
-  'skia_revision': 'a09731e5cf3e946e960482102f636a84d7018c39',
+  'skia_revision': '41169206c475f8c83542b565001ca830b5467b04',
 
   # 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: 877dac2fc8b0a3a4fd32f861dd216c77
+Signature: b383a9d67869545379ab4925018d5570
 
 UNUSED LICENSES: