Roll src/third_party/skia d62d406aa24c..81756e4cae95 (5 commits) (flu…

…tter#9300)

https://skia.googlesource.com/skia.git
/%2Blog/d62d406aa24c..81756e4cae95

git log d62d406aa24c40e210bdc0dd79d434e98034e365..81756e4cae9547a525d039128a870e336f13114b --date=short --no-merges --format=%ad %ae %s
2019-06-12 mtklein@google.com test and fix that we cover the right inputs
2019-06-12 mtklein@google.com eliminate the need for a tmp ymm register
2019-06-12 brianosman@google.com Remove version string from Viewer&flutter#39;s &flutter#34;highlight&flutter#34; SkSL shader
2019-06-12 mtklein@google.com remove moot comment
2019-06-07 nifong@google.com Minor optimization to serialization of SkPictures with many subpictures.

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.

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': 'd62d406aa24c40e210bdc0dd79d434e98034e365',
+  'skia_revision': '81756e4cae9547a525d039128a870e336f13114b',
 
   # 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: 4b3498d1b3b1243b35321866bdb0ed73
+Signature: 54490b96453a346844f14ccb7f0d9aa4
 
 UNUSED LICENSES: