Roll src/third_party/skia 6c3bd09ead0f..627d15588f4d (3 commits) (#12074)

https://skia.googlesource.com/skia.git/+log/6c3bd09ead0f..627d15588f4d

git log 6c3bd09ead0f..627d15588f4d --date=short --no-merges --format='%ad %ae %s'
2019-09-09 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 df0ce01870fa..a7ff7df26f28 (5 commits)
2019-09-09 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 649263777d17..a0cef9f54754 (522 commits)
2019-09-09 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 5d0faf9be9d7..44e6523d7ff3 (12 commits)

Created with:
  gclient setdep -r src/third_party/skia@627d15588f4d

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 mtklein@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=mtklein@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': '6c3bd09ead0fe8048326f0a5025333d900a0a37e',
+  'skia_revision': '627d15588f4d4ccdfcdd94a2fe5f6c45a3690a48',
 
   # 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: fe479f9028d5e8eec72f4672abc313ac
+Signature: 321a572dc00875e39fdcf00590d7ba13
 
 UNUSED LICENSES: