Roll src/third_party/skia e5763787f920..cc5d3e09e394 (3 commits) (flutter#8651)

https://skia.googlesource.com/skia.git/%2Blog/e5763787f920..cc5d3e09e394

git log e5763787f920c0c3a30527a596a6c207eb1b220b..cc5d3e09e39410841ba6e8866680257a92ee5205 --date=short --no-merges --format=%ad %ae %s
2019-04-19 ethannicholas@google.com Revert &flutter#34;Revert &flutter#34;added more SPIR-V RelaxedPrecision decorations&flutter#34;&flutter#34;
2019-04-19 reed@google.com use char-to-glyph cache in freetype typeface
2019-04-19 brianosman@google.com Remove SK_TREAT_COLINEAR_DIAGONAL_POINTS_AS_CONCAVE

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

Author: skia-flutter-autoroll

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': 'e5763787f920c0c3a30527a596a6c207eb1b220b',
+  'skia_revision': 'cc5d3e09e39410841ba6e8866680257a92ee5205',
 
   # 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

@@ -1,4 +1,4 @@
-Signature: 9e4254bcfa15f7a83fbf7626e8d7d94c
+Signature: b81db5fcd6895228a93af32d2315e2c1
 
 UNUSED LICENSES: