Roll src/third_party/skia b3c0bf6..7921042 (1 commits) (flutter#8984)

https://skia.googlesource.com/skia.git
/%2Blog/b3c0bf642613..7921042

git log b3c0bf6..7921042 --date=short --no-merges --format=%ad %ae %s
2019-05-16 [email protected] Roll third_party/externals/swiftshader 3d7b7ea..d61595f (10 commits)

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 ([email protected]), and stop
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Author: skia-flutter-autoroll

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': 'b3c0bf6426134223910708040943ba23bc32c2ea',
+  'skia_revision': '7921042df7e53e025b8b032a784bbe3a220b5e3d',
 
   # 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

@@ -1,4 +1,4 @@
-Signature: 511500e947ff271ad254644d57a52143
+Signature: 1a92f18e65d0b9963cd83fdf09bed13e
 
 UNUSED LICENSES: