Roll src/third_party/skia 507158f88d4d..0b2c05470bab (19 commits) (#7952)

https://skia.googlesource.com/skia.git/%2Blog/507158f88d4d..0b2c05470bab

git log 507158f88d4dd90d09588ea8c870b76defdfa91a..0b2c05470bab8ac250d510384f3511574ca35444 --date=short --no-merges --format=%ad %ae %s
2019-02-25 ethannicholas@google.com fixed SPIR-V constant swizzling
2019-02-21 csmartdalton@google.com Stack-allocate pipelines for GrMeshDrawOp
2019-02-25 herb@google.com Calculate SDFT strike in common code
2019-02-25 recipe-roller@chromium.org Roll recipe dependencies (trivial).
2019-02-25 brianosman@google.com Change particle affector to work on N particles
2019-02-25 brianosman@google.com Add "enabled" flag to affectors, fix curve interaction with stable random
2019-02-25 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 1776af77065f..8c1e8f1fb771 (1 commits)
2019-02-22 scroggo@google.com Reland "Treat kWEBP encode with quality=100 as lossless"
2019-02-25 scroggo@google.com Add a wuffs Release bot
2019-02-25 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 5efe61188243..1776af77065f (1 commits)
2019-02-25 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader e2d8b1286ce3..5efe61188243 (1 commits)
2019-02-25 bungeman@google.com Remove fuzz samples.
2019-02-25 ethannicholas@google.com fixed SkSL float literals in Arabic locale
2019-02-23 bungeman@google.com Remove defunct SkJSCanvas
2019-02-22 jvanverth@google.com Check for zero offsets for PolyUtils
2019-02-25 borenet@google.com [infra] Make the presubmit bot use recipes from CIPD
2019-02-25 fmalita@chromium.org [skottie] Layer blend mode support
2019-02-23 reed@google.com fill the layer if there is a backdrop filter
2019-02-24 nigeltao@google.com Update Wuffs version

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 (scroggo@google.com), and stop
the roller if necessary.

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': '507158f88d4dd90d09588ea8c870b76defdfa91a',
+  'skia_revision': '0b2c05470bab8ac250d510384f3511574ca35444',
 
   # 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: 1fef5f1f89a091250bec208646570e2e
+Signature: 05da1111732aec79c0ada61abc030278
 
 UNUSED LICENSES:
 
@@ -2900,7 +2900,6 @@ FILE: ../../../third_party/skia/samplecode/SampleEmboss.cpp
 FILE: ../../../third_party/skia/samplecode/SampleFillType.cpp
 FILE: ../../../third_party/skia/samplecode/SampleFilter2.cpp
 FILE: ../../../third_party/skia/samplecode/SampleFontCache.cpp
-FILE: ../../../third_party/skia/samplecode/SampleFuzz.cpp
 FILE: ../../../third_party/skia/samplecode/SampleGradients.cpp
 FILE: ../../../third_party/skia/samplecode/SampleHairCurves.cpp
 FILE: ../../../third_party/skia/samplecode/SampleHairModes.cpp
@@ -3678,7 +3677,6 @@ FILE: ../../../third_party/skia/samplecode/SampleAtlas.cpp
 FILE: ../../../third_party/skia/samplecode/SampleClipDrawMatch.cpp
 FILE: ../../../third_party/skia/samplecode/SampleFilterQuality.cpp
 FILE: ../../../third_party/skia/samplecode/SampleLighting.cpp
-FILE: ../../../third_party/skia/samplecode/SamplePathFuzz.cpp
 FILE: ../../../third_party/skia/samplecode/SampleShip.cpp
 FILE: ../../../third_party/skia/samplecode/SampleXfer.cpp
 FILE: ../../../third_party/skia/src/android/SkBitmapRegionCodec.cpp