Roll src/third_party/skia 37a9294d2eb9..d7d93001ead2 (2 commits) (#8223)

https://skia.googlesource.com/skia.git/%2Blog/37a9294d2eb9..d7d93001ead2

git log 37a9294d2eb985c5c8bf1462646e7b8b70aef5cb..d7d93001ead20ddf31d2c4352ccf2fd6b87f791b --date=short --no-merges --format=%ad %ae %s
2019-03-20 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 df35e382de78..6ce1be5a5a53 (2 commits)
2019-03-20 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update go_deps asset

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

DEPS

@@ -23,7 +23,7 @@ vars = {
   'fuchsia_git': 'https://fuchsia.googlesource.com',
   'github_git': 'https://github.com',
   'skia_git': 'https://skia.googlesource.com',
-  'skia_revision': '37a9294d2eb985c5c8bf1462646e7b8b70aef5cb',
+  'skia_revision': 'd7d93001ead20ddf31d2c4352ccf2fd6b87f791b',
 
   # 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: d7f06ebd15c8ce18dc4e0d9f873af3fc
+Signature: 8074c43ec379bde76e8bce94445a404b
 
 UNUSED LICENSES: