Roll src/third_party/skia 249a257..e0a6a04 (2 commits) (#7881)

https://skia.googlesource.com/skia.git/%2Blog/249a25730521..e0a6a048bc4a

git log 249a257..e0a6a04 --date=short --no-merges --format=%ad %ae %s
2019-02-19 recipe-roller@chromium.org Roll recipe dependencies (trivial).
2019-02-19 reed@google.com add colorspace param to textblobdiff canvas

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 (jvanverth@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': '249a2573052167220fdb90828a5df43bfcaa3a07',
+  'skia_revision': 'e0a6a048bc4a9cd29e2d1d4ac6d36153c1bce3c1',
 
   # 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: 065d625f48aad9c609619d5839bea2e2
+Signature: b948e989fcf379ec8fa710a4bb0e6690
 
 UNUSED LICENSES: