Revert "Roll skia to afb0bd4." (flutter#4071)

* Revert "Update buildroot to pull in clang_arm64 toolchain definitions. (flutter#4065)"

This reverts commit dd4f1f2.

* Revert "Update paths for icu_data move (flutter#4068)"

This reverts commit 9bde942.

* Revert "Adapt semantics event handling to framework changes (flutter#4066)"

This reverts commit ceb6d05.

* Revert "Roll skia to afb0bd4. (flutter#4064)"

This reverts commit befe2da.

DEPS

@@ -22,7 +22,7 @@ vars = {
   'fuchsia_git': 'https://fuchsia.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
   'github_git': 'https://github.com',
-  'skia_revision': 'afb0bd4f447c3c58007ced563f31b3e856346d3b',
+  'skia_revision': '5b071782585024bd75a203f3cde0429bfb7ec99d',
 
   # 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

@@ -1,4 +1,4 @@
-Signature: e1227966050bdd0fcfc6103551c33c13
+Signature: 103c293e19f43dfead2e1afb179ce5d1
 
 UNUSED LICENSES:
 
@@ -14137,7 +14137,6 @@ FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Cl
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Android-Clang-PixelXL-GPU-Adreno530-arm64-Debug-Android_Vulkan.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Debug.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-ChromeOS-Clang-Chromebook_CB5_312T-GPU-PowerVRGX6250-arm-Debug.json
-FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Chromecast-GCC-Chorizo-GPU-Cortex_A7-arm-Release.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Mac-Clang-MacMini7.1-CPU-AVX-x86_64-Release.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Mac-Clang-MacMini7.1-GPU-IntelIris5100-x86_64-Debug-CommandBuffer.json
 FILE: ../../../third_party/skia/infra/bots/recipes/test.expected/Test-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Debug-ASAN.json
@@ -15506,6 +15505,7 @@ FILE: ../../../third_party/skia/src/gpu/ops/GrCopySurfaceOp.cpp
 FILE: ../../../third_party/skia/src/gpu/ops/GrCopySurfaceOp.h
 FILE: ../../../third_party/skia/src/gpu/ops/GrDashLinePathRenderer.cpp
 FILE: ../../../third_party/skia/src/gpu/ops/GrDashLinePathRenderer.h
+FILE: ../../../third_party/skia/src/gpu/ops/GrDiscardOp.h
 FILE: ../../../third_party/skia/src/gpu/ops/GrDrawAtlasOp.cpp
 FILE: ../../../third_party/skia/src/gpu/ops/GrDrawAtlasOp.h
 FILE: ../../../third_party/skia/src/gpu/ops/GrDrawOp.h
@@ -15947,7 +15947,6 @@ FILE: ../../../third_party/skia/gm/tosrgb_colorfilter.cpp
 FILE: ../../../third_party/skia/gm/xform_image_gen.cpp
 FILE: ../../../third_party/skia/include/android/SkAndroidFrameworkUtils.h
 FILE: ../../../third_party/skia/include/core/SkColorSpaceXformCanvas.h
-FILE: ../../../third_party/skia/include/core/SkDeferredDisplayListRecorder.h
 FILE: ../../../third_party/skia/include/core/SkExecutor.h
 FILE: ../../../third_party/skia/include/core/SkFontArguments.h
 FILE: ../../../third_party/skia/include/core/SkVertices.h
@@ -15961,10 +15960,8 @@ FILE: ../../../third_party/skia/include/gpu/GrBackendSemaphore.h
 FILE: ../../../third_party/skia/include/gpu/GrBackendSurface.h
 FILE: ../../../third_party/skia/include/gpu/mock/GrMockTypes.h
 FILE: ../../../third_party/skia/include/gpu/mtl/GrMtlTypes.h
-FILE: ../../../third_party/skia/include/private/SkDeferredDisplayList.h
 FILE: ../../../third_party/skia/include/private/SkMalloc.h
 FILE: ../../../third_party/skia/include/private/SkShadowFlags.h
-FILE: ../../../third_party/skia/include/private/SkSurfaceCharacterization.h
 FILE: ../../../third_party/skia/include/utils/SkShadowUtils.h
 FILE: ../../../third_party/skia/samplecode/SampleCCPRGeometry.cpp
 FILE: ../../../third_party/skia/samplecode/SampleChineseFling.cpp
@@ -15993,7 +15990,6 @@ FILE: ../../../third_party/skia/src/core/SkColorSpaceXformer.cpp
 FILE: ../../../third_party/skia/src/core/SkColorSpaceXformer.h
 FILE: ../../../third_party/skia/src/core/SkCoverageDelta.cpp
 FILE: ../../../third_party/skia/src/core/SkCoverageDelta.h
-FILE: ../../../third_party/skia/src/core/SkDeferredDisplayListRecorder.cpp
 FILE: ../../../third_party/skia/src/core/SkDrawShadowInfo.cpp
 FILE: ../../../third_party/skia/src/core/SkDrawShadowInfo.h
 FILE: ../../../third_party/skia/src/core/SkDraw_vertices.cpp
@@ -16064,7 +16060,6 @@ FILE: ../../../third_party/skia/src/gpu/effects/GrNonlinearColorSpaceXformEffect
 FILE: ../../../third_party/skia/src/gpu/effects/GrSimpleTextureEffect.cpp
 FILE: ../../../third_party/skia/src/gpu/effects/GrSimpleTextureEffect.fp
 FILE: ../../../third_party/skia/src/gpu/effects/GrSimpleTextureEffect.h
-FILE: ../../../third_party/skia/src/gpu/gl/GrGLGpuCommandBuffer.cpp
 FILE: ../../../third_party/skia/src/gpu/gl/GrGLSemaphore.cpp
 FILE: ../../../third_party/skia/src/gpu/gl/GrGLSemaphore.h
 FILE: ../../../third_party/skia/src/gpu/instanced/InstancedOp.cpp
@@ -16097,8 +16092,6 @@ FILE: ../../../third_party/skia/src/gpu/ops/GrSemaphoreOp.h
 FILE: ../../../third_party/skia/src/gpu/ops/GrSimpleMeshDrawOpHelper.cpp
 FILE: ../../../third_party/skia/src/gpu/ops/GrSimpleMeshDrawOpHelper.h
 FILE: ../../../third_party/skia/src/gpu/ops/GrStencilPathOp.cpp
-FILE: ../../../third_party/skia/src/gpu/ops/GrTextureOp.cpp
-FILE: ../../../third_party/skia/src/gpu/ops/GrTextureOp.h
 FILE: ../../../third_party/skia/src/gpu/vk/GrVkBufferView.cpp
 FILE: ../../../third_party/skia/src/gpu/vk/GrVkBufferView.h
 FILE: ../../../third_party/skia/src/gpu/vk/GrVkSemaphore.cpp