Roll Skia from 342273cbaa21 to 2fe156929897 (17 revisions) (#19742)

https://skia.googlesource.com/skia.git/+log/342273cbaa21..2fe156929897

2020-07-14 reed@google.com Create mipmaps when creating images
2020-07-14 brianosman@google.com In FPs, store pointers for all child slots, even nullptr
2020-07-14 egdaniel@google.com Revert "Add GrContext api to update compressed backend textures."
2020-07-14 johnstiles@google.com Include the SkTSort header only where it is used.
2020-07-14 egdaniel@google.com Add GrContextOption to limit the number of cached secondary command buffers.
2020-07-14 reed@google.com remove support for serialized pictures before aug 2019
2020-07-14 robertphillips@google.com Add Context factories to GrDirectContext
2020-07-14 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go Deps
2020-07-14 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Chromium from b39fabb9a3ae to 2a68959faa37 (427 revisions)
2020-07-14 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ANGLE from 7d82d29398cc to d98afb787a24 (9 revisions)
2020-07-14 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from ad65826a2ab1 to cd0af6456eb1 (5 revisions)
2020-07-14 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update SKP version
2020-07-14 johnstiles@google.com Revert "Remove custom SkSort algorithms."
2020-07-13 johnstiles@google.com Remove custom SkSort algorithms.
2020-07-13 johnstiles@google.com Add various missing header files to BUILD.gn.
2020-07-13 csmartdalton@google.com Update glMultiDraw... to use GLuint* for baseInstances
2020-07-13 bungeman@google.com Use public api to serialize typefaces.

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 nifong@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/+doc/master/autoroll/README.md

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': '342273cbaa218bf3f07e3ad01c49b2c5893a5aa6',
+  'skia_revision': '2fe156929897bbe7ebdc56a3ce985bc5a1132805',
 
   # 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

-Signature: b12325468e25e763c21f4ed9b2f6cf20
+Signature: caf294f614b557825c5d62a7132ea58e
 
 UNUSED LICENSES: