Roll src/third_party/skia b2fdcbf3033f..26d173fee72b (10 commits) (flutter#7400)

https://skia.googlesource.com/skia.git/%2Blog/b2fdcbf3033f..26d173fee72b

git log b2fdcbf3033f2df7ec5f37cdfa70897271b096bd..26d173fee72b4674d0d044fb7d693c628408e57f --date=short --no-merges --format=%ad %ae %s
2019-01-07 [email protected] fix bookmaker
2019-01-07 [email protected] Fix extra semicolon.
2019-01-07 [email protected] Roll third_party/externals/swiftshader a4afa24ff909..f6d56f15c09e (1 commits)
2019-01-07 [email protected] Roll skia/third_party/skcms 8b9d1f9db8a8..d2f489e79366 (1 commits)
2019-01-07 [email protected] Roll recipe dependencies (trivial).
2019-01-07 [email protected] document drawSimpleText
2019-01-07 [email protected] Revert &flutter#34;Support combining per-vertex coverage with color in default GP vertex shader&flutter#34;
2019-01-03 [email protected] Isolate cache lookups in preparation to hoist into painter
2019-01-07 [email protected] Add wait function to GrVkSecondaryCBDrawContext for semaphores.
2019-01-07 [email protected] hide setTextEncoding

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 ([email protected]), 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': 'b2fdcbf3033f2df7ec5f37cdfa70897271b096bd',
+  'skia_revision': '26d173fee72b4674d0d044fb7d693c628408e57f',
 
   # 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: f15aba07ce7626073498d1ee7a60bfed
+Signature: 6b47f70224c59ae6a88c0cdc03aaa843
 
 UNUSED LICENSES:
 
@@ -4028,7 +4028,6 @@ FILE: ../../../third_party/skia/include/utils/SkLua.h
 FILE: ../../../third_party/skia/include/utils/SkLuaCanvas.h
 FILE: ../../../third_party/skia/samplecode/SampleChart.cpp
 FILE: ../../../third_party/skia/samplecode/SampleClock.cpp
-FILE: ../../../third_party/skia/samplecode/SampleFilterFuzz.cpp
 FILE: ../../../third_party/skia/samplecode/SampleLua.cpp
 FILE: ../../../third_party/skia/samplecode/SampleManyRects.cpp
 FILE: ../../../third_party/skia/samplecode/SamplePdfFileViewer.cpp