Roll src/third_party/skia 71a23d4195d9..e1f5b644656f (8 commits) (#8004)

https://skia.googlesource.com/skia.git/%2Blog/71a23d4195d9..e1f5b644656f

git log 71a23d4195d96dbf200fbf10fb887dbcc83bd1da..e1f5b644656fc38d4784d12e174a5f8bdbab7538 --date=short --no-merges --format=%ad %ae %s
2019-03-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader a1924739029e..dd1e37e31d68 (1 commits)
2019-02-28 ianloic@google.com Clean up SkFontMgr_fuchsia.cpp after FIDL API change
2019-03-01 reed@google.com fix docs for fitsInBytes
2019-03-01 kjlubick@google.com [canvaskit] Roll 0.4.1
2019-03-01 mtklein@google.com fix labels in P3 gm
2019-02-28 jvanverth@google.com Add GrMtlPipelineStateCache.
2019-03-01 fmalita@chromium.org [canvaskit] Ignore image paths in Skottie asset keys
2019-03-01 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 5546fb4fdd85..1581ff030b9c (2 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': '71a23d4195d96dbf200fbf10fb887dbcc83bd1da',
+  'skia_revision': 'e1f5b644656fc38d4784d12e174a5f8bdbab7538',
 
   # 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: c82fdb93a1014dcf85c470bff90ccc4b
+Signature: 9fe2814b76fdfc922c7db5e725e33d37
 
 UNUSED LICENSES: