Roll src/third_party/skia 09198525261a..705e67347962 (7 commits) (#8013)

https://skia.googlesource.com/skia.git/%2Blog/09198525261a..705e67347962

git log 09198525261aa5152c2183158315d81176776d99..705e67347962f9b76d9a4aafcc21b8781b45d632 --date=short --no-merges --format=%ad %ae %s
2019-03-01 recipe-roller@chromium.org Roll recipe dependencies (trivial).
2019-03-02 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader a2f5fd826031..823ca85404fb (1 commits)
2019-03-02 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update go_deps asset
2019-03-02 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 37c024a6a7fd..a2f5fd826031 (2 commits)
2019-03-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader dd1e37e31d68..37c024a6a7fd (1 commits)
2019-02-28 bungeman@google.com Adjust luminance gamma for Mac.
2019-03-01 mtklein@google.com bring back lowp bilerp_clamp_8888

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 (scroggo@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': '09198525261aa5152c2183158315d81176776d99',
+  'skia_revision': '705e67347962f9b76d9a4aafcc21b8781b45d632',
 
   # 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: 614fb46c9f0811dad283390a278f8b0d
+Signature: f7e13ab4be87bd6c4206f27f9a484860
 
 UNUSED LICENSES: