Roll src/third_party/skia 7abeb28..2ab87fc (12 commits) (#5445)

Auto-roller completed checks. Merging.
diff --git a/DEPS b/DEPS
index 1b96da4..7aacd31 100644
--- a/DEPS
+++ b/DEPS
@@ -23,7 +23,7 @@
   'fuchsia_git': 'https://fuchsia.googlesource.com',
   'github_git': 'https://github.com',
   'skia_git': 'https://skia.googlesource.com',
-  'skia_revision': '7abeb28342078af39b19a1448d6147c7258f5203',
+  'skia_revision': '2ab87fcc1b06a1d444482b9f244816b3e34cff6b',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the
diff --git a/travis/licenses_golden/licenses_third_party b/travis/licenses_golden/licenses_third_party
index 1103369..2c49a85 100644
--- a/travis/licenses_golden/licenses_third_party
+++ b/travis/licenses_golden/licenses_third_party
@@ -1,4 +1,4 @@
-Signature: 93dd9ae16639de6efec53357d0cb9d62
+Signature: 056e3a5e6c745734d707e8189e15bd96
 
 UNUSED LICENSES:
 
@@ -17211,6 +17211,7 @@
 FILE: ../../../third_party/skia/modules/sksg/src/SkSGText.cpp
 FILE: ../../../third_party/skia/samplecode/SampleAnimatedImage.cpp
 FILE: ../../../third_party/skia/samplecode/SampleFlutterAnimate.cpp
+FILE: ../../../third_party/skia/samplecode/SampleGlyphTransform.cpp
 FILE: ../../../third_party/skia/src/android/SkAnimatedImage.cpp
 FILE: ../../../third_party/skia/src/core/SkBlurPriv.h
 FILE: ../../../third_party/skia/src/core/SkCanvasPriv.cpp