Roll src/third_party/skia c30f1a936d84..380561393385 (3 commits) (#12059)

https://skia.googlesource.com/skia.git/+log/c30f1a936d84..380561393385

git log c30f1a936d84..380561393385 --date=short --no-merges --format='%ad %ae %s'
2019-09-06 benjaminwagner@google.com [infra] Update Mac 10.14 bots to 10.14.6
2019-09-06 cblume@chromium.org Add blocklist command line parameter
2019-09-06 egdaniel@google.com Revert "Add support for direct use of vulkan primary command buffer in render pass."

Created with:
  gclient setdep -r src/third_party/skia@380561393385

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 jlavrova@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=jlavrova@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': 'c30f1a936d84d476bb08bd9d0a6e56eddb6fe984',
+  'skia_revision': '38056139338559a0e4909a8c83b5de62ebb8d126',
 
   # 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: 58a80744af6eb32a6f31de73dc0a21c7
+Signature: f899e279dd1702051c45eb9b52c30c57
 
 UNUSED LICENSES: