Roll src/third_party/skia 6344c2937997..0af32fdf5fea (12 commits) (flutter#14139)

https://skia.googlesource.com/skia.git/+log/6344c2937997..0af32fdf5fea

git log 6344c2937997..0af32fdf5fea --date=short --first-parent --format='%ad %ae %s'
2019-12-04 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-12-04 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-12-04 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-12-04 michaelludwig@google.com Reduce GrTextureOp size
2019-12-04 michaelludwig@google.com Specialize inset/outset/reset based on known quad type
2019-12-04 mtklein@google.com flip on a bunch of GCC warnings
2019-12-04 herb@google.com Specialize vertex size for GrTextBlob
2019-12-04 mtklein@google.com work around GCC 8 mips release bug?
2019-12-04 herb@google.com Remove legacy CPU glyph drawing code
2019-12-04 herb@google.com Make fInitialViewMatrix const in GrTextBlob
2019-12-04 halcanary@google.com experimental/skottie_ios: fix some objc errors
2019-12-04 robertphillips@google.com Add helper functions to AAHairlineOp

Created with:
  gclient setdep -r src/third_party/skia@0af32fdf5fea

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 bsalomon@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: bsalomon@google.com

Author: skia-flutter-autoroll

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': '6344c2937997f12221a5c233803a3f2d19f2111f',
+  'skia_revision': '0af32fdf5feaf1a5a46fb793b5d25849bd34a57b',
 
   # 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: c40417f6dd64a7cc0b09b7dfc92ebfe1
+Signature: 742071d5c0f38f8dd2ddb569911ed597
 
 UNUSED LICENSES: