Roll src/third_party/skia 5b2ede3..39ec60a (5 commits)

https://skia.googlesource.com/skia.git/+log/5b2ede3d0d44..39ec60aa8348

git log 5b2ede3..39ec60a --date=short --first-parent --format='%ad %ae %s'
2020-05-14 egdaniel@google.com Don't delete gl textures on failed update.
2020-05-14 kjlubick@google.com [canvaskit] Disable getError calls for webGL
2020-05-14 kjlubick@google.com [canvaskit] Fix memory leak in paragraph bindings
2020-05-14 herb@google.com Add array initializer
2020-05-14 jvanverth@google.com Add Direct3D swapchain support

Created with:
  gclient setdep -r src/third_party/skia@39ec60aa8348

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 jlavrova@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: jlavrova@google.com

Author: skia-flutter-autoroll

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': '5b2ede3d0d44f5d96ccaad5d72df41c1df678708',
+  'skia_revision': '39ec60aa83481787eff39af985e1122f2acb4d1b',
 
   # 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: b3448981e6234dd816ea49ded4372a41
+Signature: b8bb9dcdb4e1725caafee2541a050266
 
 UNUSED LICENSES: