Roll src/third_party/skia 89bf154..5a2f962 (16 commits) (flutter#14825)

https://skia.googlesource.com/skia.git/+log/89bf1547f3aa..5a2f962313a5

git log 89bf154..5a2f962 --date=short --first-parent --format='%ad %ae %s'
2019-12-27 [email protected] Add back door support for GLSL tessellation shaders
2019-12-27 [email protected] Move --internalSamples to common flags
2019-12-27 [email protected] Add SkRuntimeEffect::makeShader
2019-12-27 [email protected] Clean up GrSimpleTextureEffect.
2019-12-27 [email protected] Workaround MSVC 2019 code-gen bug in lighting image filter
2019-12-27 [email protected] Prevent de-duplication of Housekeeper-PerCommit-BuildTaskDrivers
2019-12-27 [email protected] Avoid div by zero in ProcessorTest to please UBSAN
2019-12-27 [email protected] Move updating a single texture coordinate to SubRun
2019-12-27 [email protected] Revert "GrGLMakeNativeInterface_{iOS,mac,win}: clean up"
2019-12-27 [email protected] Simplify color and translate updates
2019-12-27 [email protected] GrGLMakeNativeInterface_{iOS,mac,win}: clean up
2019-12-27 [email protected] Make ProcessorOptimizationTest for canTweakAlphaForCoverage more robust
2019-12-27 [email protected] Remove "-v2" from docker image names
2019-12-27 [email protected] Roll third_party/externals/angle2 01dd6f6..ebed855 (1 commits)
2019-12-27 [email protected] Roll third_party/externals/swiftshader 6e3a387c0159..59465799210b (1 commits)
2019-12-27 [email protected] Roll ../src 48115d3366a0..d814fc7ea91d (94 commits)

Created with:
  gclient setdep -r src/third_party/skia@5a2f962313a5

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 [email protected] 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: [email protected]

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': '89bf1547f3aa3ff3c142d197c14bbce1e199db2b',
+  'skia_revision': '5a2f962313a59a6a80bb6182a7ed6ca3beb5dd8b',
 
   # 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: d56d875bcfe5933af9f114eaf9e2798d
+Signature: fd011a0e9443cba8e33e568e762fab98
 
 UNUSED LICENSES:
 
@@ -3092,6 +3092,7 @@ FILE: ../../../third_party/skia/gm/samplelocations.cpp
 FILE: ../../../third_party/skia/gm/skbug_8664.cpp
 FILE: ../../../third_party/skia/gm/skbug_8955.cpp
 FILE: ../../../third_party/skia/gm/skvm.cpp
+FILE: ../../../third_party/skia/gm/tessellation.cpp
 FILE: ../../../third_party/skia/gm/video_decoder.cpp
 FILE: ../../../third_party/skia/gm/yuv420_odd_dim.cpp
 FILE: ../../../third_party/skia/include/core/SkTileMode.h