Roll src/third_party/skia a2e7d5e2b63c..83cfe4fa24d9 (3 commits) (#9916)

https://skia.googlesource.com/skia.git
/compare/a2e7d5e2b63c..83cfe4fa24d9

git log a2e7d5e2b63c3904ce205ace64cff1ed7a3eed7e..83cfe4fa24d93958ad5d25f5b82f555f87b0583a --date=short --no-merges --format=%ad %ae %s
2019-07-17 bsalomon@google.com Remove simple GrGpu::createTexture helper
2019-07-18 robertphillips@google.com Revert "Make rest of GrGpu::wrapBackend* methods take a GrColorType"
2019-07-17 enne@chromium.org Use explicit alignment for 8-byte types

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 (nifong@google.com), and stop
the roller if necessary.

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': 'a2e7d5e2b63c3904ce205ace64cff1ed7a3eed7e',
+  'skia_revision': '83cfe4fa24d93958ad5d25f5b82f555f87b0583a',
 
   # 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: 90736a40c7ad1750d131327ec39e3b32
+Signature: ce19ae9f02cfddc78ddd496480f87398
 
 UNUSED LICENSES: