Roll src/third_party/skia a7e557f3e353..3ea4d5bb857d (4 commits) (flu…

…tter#15963)

https://skia.googlesource.com/skia.git/+log/a7e557f3e353..3ea4d5bb857d

git log a7e557f3e353..3ea4d5bb857d --date=short --first-parent --format='%ad %ae %s'
2020-01-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 7afe38da7578..2ae619822948 (463 commits)
2020-01-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 135f8fcba837..f3b4e6c3030f (8 commits)
2020-01-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader f324fe10ca65..5ef91b82cbed (6 commits)
2020-01-24 bsalomon@google.com Add support for GL_NV_fence.

Created with:
  gclient setdep -r src/third_party/skia@3ea4d5bb857d

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC benjaminwagner@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

Bug: None
Tbr: benjaminwagner@google.com

DEPS

@@ -26,7 +26,7 @@ vars = {
   'skia_git': 'https://skia.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': 'a7e557f3e353b665b52ecbcc2ef0f665811c92a1',
+  'skia_revision': '3ea4d5bb857d1552e0444944fc981d6bffa02aae',
 
   # 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: 73daf088a395f4960bcf3302fabdf784
+Signature: 42cdf11afbf6823107295a2cbbacd41e
 
 UNUSED LICENSES: