Roll src/third_party/skia 4918bbc..384981b (13 commits) (flutter#9395)

https://skia.googlesource.com/skia.git
/%2Blog/4918bbcbfd54..384981b

git log 4918bbc..384981b --date=short --no-merges --format=%ad %ae %s
2019-06-20 [email protected] Revert "Deserialize MultiPictureDocument based SKP files (with image sharing proc) in wasm debugger."
2019-06-20 [email protected] Update NVIDIA_Shield
2019-06-20 [email protected] Add FormatInfo struct to GrGLCaps.
2019-06-20 [email protected] first VEX ymm vector ops
2019-06-20 [email protected] [sksg] Clear the context mask filter when applied via layers
2019-06-17 [email protected] Deserialize MultiPictureDocument based SKP files (with image sharing proc) in wasm debugger.
2019-06-20 [email protected] runtime shaders
2019-06-20 [email protected] Switch Metal dynamic buffer allocations to use a ring buffer.
2019-06-20 [email protected] Revert "Revert "Make SkASSERT not break build in constexpr GrSwizzle method on GCC""
2019-06-20 [email protected] [lottie-web-perf] Add LottieWeb CPU and GPU bots
2019-06-20 [email protected] forward-declare Program::Instruction
2019-06-20 [email protected] Fix up wacky_yuv_formats GM and GL caps
2019-06-20 [email protected] no -ffoo-sections on Darwin

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https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

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DEPS

@@ -24,7 +24,7 @@ vars = {
   'fuchsia_git': 'https://fuchsia.googlesource.com',
   'github_git': 'https://github.com',
   'skia_git': 'https://skia.googlesource.com',
-  'skia_revision': '4918bbcbfd5444919b4f11c3fa3d4422cf3b1236',
+  'skia_revision': '384981be3dd2f98226a748628ace453a481050f9',
 
   # 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: d775fee889f0cca00c09dcf3c1b78b14
+Signature: 4f33e78fc378a0892121cdab2ba08a64
 
 UNUSED LICENSES:
 
@@ -2070,8 +2070,11 @@ FILE: ../../../third_party/skia/infra/bots/recipes/perf_skottietrace.expected/Pe
 FILE: ../../../third_party/skia/infra/bots/recipes/perf_skottietrace.expected/Perf-Debian9-Clang-GCE-CPU-AVX2-x86_64-Release-All-SkottieTracing.json
 FILE: ../../../third_party/skia/infra/bots/recipes/perf_skottietrace.expected/skottietracing_parse_trace_error.json
 FILE: ../../../third_party/skia/infra/bots/recipes/perf_skottietrace.expected/skottietracing_trybot.json
+FILE: ../../../third_party/skia/infra/bots/recipes/perf_skottiewasm_lottieweb.expected/lottie_web_perf.json
+FILE: ../../../third_party/skia/infra/bots/recipes/perf_skottiewasm_lottieweb.expected/lottie_web_perf_trybot.json
 FILE: ../../../third_party/skia/infra/bots/recipes/perf_skottiewasm_lottieweb.expected/skottie_wasm_perf.json
 FILE: ../../../third_party/skia/infra/bots/recipes/perf_skottiewasm_lottieweb.expected/skottie_wasm_perf_trybot.json
+FILE: ../../../third_party/skia/infra/bots/recipes/perf_skottiewasm_lottieweb.expected/unrecognized_builder.json
 FILE: ../../../third_party/skia/infra/bots/recipes/recreate_skps.expected/Housekeeper-Nightly-RecreateSKPs_Canary.json
 FILE: ../../../third_party/skia/infra/bots/recipes/recreate_skps.expected/Housekeeper-Weekly-RecreateSKPs.json
 FILE: ../../../third_party/skia/infra/bots/recipes/recreate_skps.expected/failed_upload.json
@@ -5330,6 +5333,7 @@ FILE: ../../../third_party/skia/gm/asyncrescaleandread.cpp
 FILE: ../../../third_party/skia/gm/crbug_908646.cpp
 FILE: ../../../third_party/skia/gm/crbug_946965.cpp
 FILE: ../../../third_party/skia/gm/runtimecolorfilter.cpp
+FILE: ../../../third_party/skia/gm/runtimeshader.cpp
 FILE: ../../../third_party/skia/include/gpu/gl/GrGLAssembleHelpers.h
 FILE: ../../../third_party/skia/include/private/GrGLTypesPriv.h
 FILE: ../../../third_party/skia/include/private/SkThreadAnnotations.h
@@ -5506,6 +5510,8 @@ FILE: ../../../third_party/skia/src/gpu/mtl/GrMtlDepthStencil.h
 FILE: ../../../third_party/skia/src/gpu/vk/GrVkSecondaryCBDrawContext.cpp
 FILE: ../../../third_party/skia/src/gpu/vk/GrVkSecondaryCBDrawContext.h
 FILE: ../../../third_party/skia/src/opts/SkVM_opts.h
+FILE: ../../../third_party/skia/src/shaders/SkRTShader.cpp
+FILE: ../../../third_party/skia/src/shaders/SkRTShader.h
 FILE: ../../../third_party/skia/src/sksl/SkSLDefines.h
 FILE: ../../../third_party/skia/src/sksl/SkSLOutputStream.cpp
 FILE: ../../../third_party/skia/src/utils/SkCharToGlyphCache.cpp