Roll src/third_party/skia 512e38091c85..05201fc7e77e (10 commits) (#8173)

https://skia.googlesource.com/skia.git/%2Blog/512e38091c85..05201fc7e77e

git log 512e38091c8511847334b89365d46cbb0452309a..05201fc7e77e0d2682763dbbe15cf6b65a0d6cb9 --date=short --no-merges --format=%ad %ae %s
2019-03-14 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-03-14 brianosman@google.com Ganesh: Clamp blend inputs when using F16_Clamped pixel config
2019-03-14 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader becb44f1177a..9b156615197d (1 commits)
2019-03-14 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-03-14 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader a2749f39f47d..becb44f1177a (1 commits)
2019-03-14 jvanverth@google.com Fix cached perspective shadows
2019-03-14 michaelludwig@google.com Blacklist compositor_quads_filter on chromecast
2019-03-14 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader af973b67141e..a2749f39f47d (1 commits)
2019-03-14 bsalomon@google.com Clamp override color to bytes in GrFillRectOp when half float vertex attrs not supported.
2019-03-14 kjlubick@google.com [canvaskit] Fallback to CPU more gracefully

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 (benjaminwagner@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': '512e38091c8511847334b89365d46cbb0452309a',
+  'skia_revision': '05201fc7e77e0d2682763dbbe15cf6b65a0d6cb9',
 
   # 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: 0b30f75a389dd244bf9fe53576e7b76c
+Signature: 8a89af94f3b409ce70b53afbfb2b7c5c
 
 UNUSED LICENSES: