Roll src/third_party/skia cf0a9a628490..a1ea0a96f490 (1 commits) (#12743)

https://skia.googlesource.com/skia.git/+log/cf0a9a628490..a1ea0a96f490

git log cf0a9a628490..a1ea0a96f490 --date=short --no-merges --format='%ad %ae %s'
2019-10-02 chinmaygarde@google.com Don't build the minimal Metal app when building for Flutter.

Created with:
  gclient setdep -r src/third_party/skia@a1ea0a96f490

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 rmistry@google.com on the revert to ensure that a human
is aware of the problem.

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/+/master/autoroll/README.md

Bug: None
TBR=rmistry@google.com

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': 'cf0a9a628490ccb52f7257e8c22e1bbf432252f2',
+  'skia_revision': 'a1ea0a96f4906012b37814fe51ed7850ce28709d',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the