Roll Skia to a9c8a05608fe32520a0899016fc28bb1f5ead355 (#4571)

Fixes https://github.com/flutter/flutter/issues/10284

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': '579f094f1259931c30dfd1623e8e22d74b4a7531',
+  'skia_revision': 'a9c8a05608fe32520a0899016fc28bb1f5ead355',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the

travis/licenses_golden/licenses_third_party

-Signature: a19a996e741c694d2226e3845d598e64
+Signature: f0d21e351fa74cadfa67e97d6efe4dbd
 
 UNUSED LICENSES:
 
@@ -17472,6 +17472,7 @@ FILE: ../../../third_party/skia/infra/bots/recipe_modules/ct/examples/full.expec
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/env/examples/full.expected/test.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Build-Debian9-Clang-arm-Release-Android_API26.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Build-Debian9-Clang-arm-Release-Chromebook_GLES.json
+FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Build-Debian9-Clang-arm64-Release-Android_ASAN.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Build-Debian9-Clang-x86_64-Debug-Chromebook_GLES.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Build-Debian9-Clang-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Build-Debian9-Clang-x86_64-Release-Fast.json
@@ -17499,6 +17500,7 @@ FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.e
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Build-Win-MSVC-x86-Debug-Exceptions.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Housekeeper-PerCommit-CheckGeneratedFiles.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-GalaxyS7_G930FD-GPU-MaliT880-arm64-Debug-All-Android.json
+FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-Nexus5x-GPU-Adreno418-arm64-Debug-All-Android.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Debug-All-Android.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-Pixel-GPU-Adreno530-arm64-Debug-All-Android.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-ChromeOS-Clang-SamsungChromebookPlus-GPU-MaliT860-arm-Release-All.json
@@ -17509,6 +17511,7 @@ FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.e
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Android-Clang-AndroidOne-GPU-Mali400MP2-arm-Release-All-Android.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Android-Clang-GalaxyS7_G930FD-GPU-MaliT880-arm64-Debug-All-Android.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Android-Clang-Nexus5x-GPU-Adreno418-arm64-Debug-All-Android.json
+FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Android-Clang-Nexus5x-GPU-Adreno418-arm64-Release-All-Android_ASAN.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Android-Clang-Nexus7-CPU-Tegra3-arm-Release-All-Android.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Android-Clang-Pixel-GPU-Adreno530-arm64-Debug-All-Android.json
 FILE: ../../../third_party/skia/infra/bots/recipe_modules/flavor/examples/full.expected/Test-ChromeOS-Clang-SamsungChromebookPlus-GPU-MaliT860-arm-Release-All.json
@@ -17586,6 +17589,7 @@ FILE: ../../../third_party/skia/infra/bots/recipes/calmbench.expected/Calmbench-
 FILE: ../../../third_party/skia/infra/bots/recipes/check_generated_files.expected/Housekeeper-PerCommit-CheckGeneratedFiles.json
 FILE: ../../../third_party/skia/infra/bots/recipes/compile.expected/Build-Debian9-Clang-arm-Release-Chromebook_GLES.json
 FILE: ../../../third_party/skia/infra/bots/recipes/compile.expected/Build-Debian9-Clang-arm64-Release-Android.json
+FILE: ../../../third_party/skia/infra/bots/recipes/compile.expected/Build-Debian9-Clang-arm64-Release-Android_ASAN.json
 FILE: ../../../third_party/skia/infra/bots/recipes/compile.expected/Build-Debian9-Clang-arm64-Release-Android_Vulkan.json
 FILE: ../../../third_party/skia/infra/bots/recipes/compile.expected/Build-Debian9-Clang-x86_64-Debug-ASAN.json
 FILE: ../../../third_party/skia/infra/bots/recipes/compile.expected/Build-Debian9-Clang-x86_64-Debug-Coverage.json
@@ -17686,6 +17690,7 @@ FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Cl
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Clang-NVIDIA_Shield-GPU-TegraX1-arm64-Debug-All-Android.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Clang-NVIDIA_Shield-GPU-TegraX1-arm64-Debug-All-Android_CCPR.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus5-GPU-Adreno330-arm-Release-All-Android.json
+FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus5x-GPU-Adreno418-arm64-Debug-All-Android_ASAN.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus5x-GPU-Adreno418-arm64-Debug-All-Android_NoGPUThreads.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus7-CPU-Tegra3-arm-Release-All-Android.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus7-GPU-Tegra3-arm-Debug-All-Android.json
@@ -17695,6 +17700,7 @@ FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Cl
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Clang-Pixel-GPU-Adreno530-arm64-Debug-All-Android_Vulkan.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-ChromeOS-Clang-ASUSChromebookFlipC100-GPU-MaliT764-arm-Debug-All.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-ChromeOS-Clang-AcerChromebookR13Convertible-GPU-PowerVRGX6250-arm-Debug-All.json
+FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Chromecast-GCC-Chorizo-CPU-Cortex_A7-arm-Release-All.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Chromecast-GCC-Chorizo-GPU-Cortex_A7-arm-Release-All.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Debian9-Clang-GCE-CPU-AVX2-x86_64-Debug-All-ASAN.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Debian9-Clang-GCE-CPU-AVX2-x86_64-Debug-All-MSAN.json
@@ -17837,7 +17843,6 @@ FILE: ../../../third_party/skia/site/favicon.ico
 FILE: ../../../third_party/skia/site/user/METADATA
 FILE: ../../../third_party/skia/site/user/api/METADATA
 FILE: ../../../third_party/skia/site/user/api/catalog.htm
-FILE: ../../../third_party/skia/site/user/quick/METADATA
 FILE: ../../../third_party/skia/site/user/sample/architecture.png
 FILE: ../../../third_party/skia/site/user/sample/detail_correct.png
 FILE: ../../../third_party/skia/site/user/sample/detail_wrong.png
@@ -19220,7 +19225,6 @@ FILE: ../../../third_party/skia/bench/TileBench.cpp
 FILE: ../../../third_party/skia/bench/WritePixelsBench.cpp
 FILE: ../../../third_party/skia/bench/gUniqueGlyphIDs.h
 FILE: ../../../third_party/skia/dm/DM.cpp
-FILE: ../../../third_party/skia/fuzz/FilterFuzz.cpp
 FILE: ../../../third_party/skia/gm/alphagradients.cpp
 FILE: ../../../third_party/skia/gm/arcofzorro.cpp
 FILE: ../../../third_party/skia/gm/beziereffects.cpp
@@ -19447,13 +19451,13 @@ FILE: ../../../third_party/skia/dm/DMFontMgr.h
 FILE: ../../../third_party/skia/dm/DMGpuTestProcs.cpp
 FILE: ../../../third_party/skia/example/HelloWorld.cpp
 FILE: ../../../third_party/skia/example/HelloWorld.h
-FILE: ../../../third_party/skia/experimental/skotty/Skotty.cpp
-FILE: ../../../third_party/skia/experimental/skotty/Skotty.h
-FILE: ../../../third_party/skia/experimental/skotty/SkottyAnimator.cpp
-FILE: ../../../third_party/skia/experimental/skotty/SkottyAnimator.h
-FILE: ../../../third_party/skia/experimental/skotty/SkottyPriv.h
-FILE: ../../../third_party/skia/experimental/skotty/SkottyProperties.cpp
-FILE: ../../../third_party/skia/experimental/skotty/SkottyProperties.h
+FILE: ../../../third_party/skia/experimental/skottie/Skottie.cpp
+FILE: ../../../third_party/skia/experimental/skottie/Skottie.h
+FILE: ../../../third_party/skia/experimental/skottie/SkottieAnimator.cpp
+FILE: ../../../third_party/skia/experimental/skottie/SkottieAnimator.h
+FILE: ../../../third_party/skia/experimental/skottie/SkottiePriv.h
+FILE: ../../../third_party/skia/experimental/skottie/SkottieProperties.cpp
+FILE: ../../../third_party/skia/experimental/skottie/SkottieProperties.h
 FILE: ../../../third_party/skia/experimental/sksg/SkSGDraw.cpp
 FILE: ../../../third_party/skia/experimental/sksg/SkSGDraw.h
 FILE: ../../../third_party/skia/experimental/sksg/SkSGEffectNode.cpp
@@ -19647,26 +19651,26 @@ FILE: ../../../third_party/skia/src/gpu/GrSurfaceProxyPriv.h
 FILE: ../../../third_party/skia/src/gpu/GrTextureProxyCacheAccess.h
 FILE: ../../../third_party/skia/src/gpu/GrTextureProxyPriv.h
 FILE: ../../../third_party/skia/src/gpu/SkGr.h
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRAtlas.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRAtlas.h
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRClipProcessor.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRClipProcessor.h
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRCoverageOp.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRCoverageOp.h
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRCoverageProcessor.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRCoverageProcessor.h
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRCoverageProcessor_GSImpl.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRCoverageProcessor_VSImpl.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRCubicShader.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRCubicShader.h
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRGeometry.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRGeometry.h
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRPathProcessor.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRPathProcessor.h
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRQuadraticShader.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRQuadraticShader.h
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRTriangleShader.cpp
-FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPRTriangleShader.h
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCAtlas.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCAtlas.h
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCClipProcessor.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCClipProcessor.h
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCCoverageProcessor.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCCoverageProcessor.h
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCCoverageProcessor_GSImpl.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCCoverageProcessor_VSImpl.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCCubicShader.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCCubicShader.h
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCGeometry.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCGeometry.h
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPathParser.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPathParser.h
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPathProcessor.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCPathProcessor.h
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCQuadraticShader.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCQuadraticShader.h
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCTriangleShader.cpp
+FILE: ../../../third_party/skia/src/gpu/ccpr/GrCCTriangleShader.h
 FILE: ../../../third_party/skia/src/gpu/ccpr/GrCoverageCountingPathRenderer.cpp
 FILE: ../../../third_party/skia/src/gpu/ccpr/GrCoverageCountingPathRenderer.h
 FILE: ../../../third_party/skia/src/gpu/ddl/GrDDLGpu.cpp
@@ -19910,15 +19914,35 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ====================================================================================================
 LIBRARY: skia
-ORIGIN: ../../../third_party/skia/experimental/sksg/SkSGImage.cpp + ../../../third_party/skia/LICENSE
+ORIGIN: ../../../third_party/skia/experimental/sksg/effects/SkSGMaskEffect.cpp + ../../../third_party/skia/LICENSE
 TYPE: LicenseType.bsd
 FILE: ../../../third_party/skia/experimental/sksg/SkSGImage.cpp
 FILE: ../../../third_party/skia/experimental/sksg/SkSGImage.h
+FILE: ../../../third_party/skia/experimental/sksg/effects/SkSGMaskEffect.cpp
+FILE: ../../../third_party/skia/experimental/sksg/effects/SkSGMaskEffect.h
+FILE: ../../../third_party/skia/experimental/sksg/effects/SkSGOpacityEffect.cpp
+FILE: ../../../third_party/skia/experimental/sksg/effects/SkSGOpacityEffect.h
+FILE: ../../../third_party/skia/experimental/sksg/paint/SkSGGradient.cpp
+FILE: ../../../third_party/skia/experimental/sksg/paint/SkSGGradient.h
+FILE: ../../../third_party/skia/fuzz/FuzzCommon.h
+FILE: ../../../third_party/skia/fuzz/oss_fuzz/FuzzRegionDeserialize.cpp
+FILE: ../../../third_party/skia/fuzz/oss_fuzz/FuzzRegionSetPath.cpp
+FILE: ../../../third_party/skia/gm/hugepath.cpp
+FILE: ../../../third_party/skia/gm/makeRasterImage.cpp
+FILE: ../../../third_party/skia/gm/orientation.cpp
+FILE: ../../../third_party/skia/gm/shadermaskfilter.cpp
+FILE: ../../../third_party/skia/include/android/SkAnimatedImage.h
+FILE: ../../../third_party/skia/include/effects/SkShaderMaskFilter.h
 FILE: ../../../third_party/skia/include/private/SkPedanticMath.h
+FILE: ../../../third_party/skia/infra/cts/run_testlab.go
+FILE: ../../../third_party/skia/samplecode/SampleAnimatedImage.cpp
+FILE: ../../../third_party/skia/src/android/SkAnimatedImage.cpp
 FILE: ../../../third_party/skia/src/core/SkCanvasPriv.cpp
 FILE: ../../../third_party/skia/src/core/SkCubicMap.cpp
 FILE: ../../../third_party/skia/src/core/SkCubicMap.h
 FILE: ../../../third_party/skia/src/core/SkRectPriv.h
+FILE: ../../../third_party/skia/src/core/SkSafeRange.h
+FILE: ../../../third_party/skia/src/effects/SkShaderMaskFilter.cpp
 FILE: ../../../third_party/skia/src/gpu/GrProxyProvider.cpp
 FILE: ../../../third_party/skia/src/gpu/GrProxyProvider.h
 FILE: ../../../third_party/skia/src/gpu/GrResourceProviderPriv.h
@@ -20269,7 +20293,6 @@ TYPE: LicenseType.bsd
 FILE: ../../../third_party/skia/include/core/SkMallocPixelRef.h
 FILE: ../../../third_party/skia/include/core/SkPixelRef.h
 FILE: ../../../third_party/skia/include/core/SkUnPreMultiply.h
-FILE: ../../../third_party/skia/include/core/SkWriter32.h
 FILE: ../../../third_party/skia/include/effects/SkBlurDrawLooper.h
 FILE: ../../../third_party/skia/include/effects/SkPaintFlagsDrawFilter.h
 FILE: ../../../third_party/skia/include/private/SkFloatBits.h
@@ -20282,6 +20305,7 @@ FILE: ../../../third_party/skia/src/core/SkPoint.cpp
 FILE: ../../../third_party/skia/src/core/SkPtrRecorder.h
 FILE: ../../../third_party/skia/src/core/SkReader32.h
 FILE: ../../../third_party/skia/src/core/SkStroke.cpp
+FILE: ../../../third_party/skia/src/core/SkWriter32.h
 FILE: ../../../third_party/skia/src/effects/SkPackBits.h
 FILE: ../../../third_party/skia/src/ports/SkFontMgr_empty_factory.cpp
 FILE: ../../../third_party/skia/src/ports/SkImageEncoder_CG.cpp