Roll src/third_party/skia 52d8a5976a23..e1636a4b56aa (1 commits) (#7943)

https://skia.googlesource.com/skia.git/%2Blog/52d8a5976a23..e1636a4b56aa

git log 52d8a5976a23ad4b14ff3e824dd7ad4460d2cdfd..e1636a4b56aacd0e9f26bf7d0dd2a2f14afe2bd3 --date=short --no-merges --format=%ad %ae %s
2019-02-25 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 7c33e88eebb5..b47c816ad7e6 (3 commits)

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': '52d8a5976a23ad4b14ff3e824dd7ad4460d2cdfd',
+  'skia_revision': 'e1636a4b56aacd0e9f26bf7d0dd2a2f14afe2bd3',
 
   # 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: fbfec472922e012b0da2e58253745827
+Signature: 4fe90056d50f558c66b6a926b47610cb
 
 UNUSED LICENSES: