Roll Skia from b37105e to 83ed957 (7 revisions)

https://skia.googlesource.com/skia.git/+log/b37105ea6cca..83ed957d70b6

2020-05-21 jvanverth@google.com Add D3D draw support
2020-05-21 reed@google.com Revert "move onto new factories for SkMatrix"
2020-05-21 bungeman@google.com Remove OneLineShaper::increment.
2020-05-21 bungeman@google.com Iterate over unresolved instead of cycling.
2020-05-21 reed@google.com move onto new factories for SkMatrix
2020-05-21 kjlubick@google.com [canvaskit] Fix some other usages of .ready
2020-05-21 kjlubick@google.com Upgrade CanvasKit emscripten to version 1.39.16.

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC lovisolo@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Author: skia-flutter-autoroll

DEPS

@@ -26,7 +26,7 @@ vars = {
   'skia_git': 'https://skia.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': 'b37105ea6ccaab2bf5e39e446c68e00c671e0fa8',
+  'skia_revision': '83ed957d70b628bc8004b6dee4881ccf8d137cc1',
 
   # 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: ff50540c2fa91162018d73f6c3ec4b4a
+Signature: d8476d747f15c0e1c0ed6401215fbdfd
 
 UNUSED LICENSES:
 
@@ -996,7 +996,6 @@ FILE: ../../../third_party/skia/experimental/skottiekit/helper.js
 FILE: ../../../third_party/skia/experimental/skottiekit/interface.js
 FILE: ../../../third_party/skia/experimental/skottiekit/postamble.js
 FILE: ../../../third_party/skia/experimental/skottiekit/preamble.js
-FILE: ../../../third_party/skia/experimental/skottiekit/ready.js
 FILE: ../../../third_party/skia/experimental/skottiekit/release.js
 FILE: ../../../third_party/skia/experimental/wasm-skp-debugger/cpu.js
 FILE: ../../../third_party/skia/experimental/wasm-skp-debugger/debugger/anim.mskp
@@ -1325,7 +1324,6 @@ FILE: ../../../third_party/skia/modules/canvaskit/perf/canvas.bench.js
 FILE: ../../../third_party/skia/modules/canvaskit/perf/matrix.bench.js
 FILE: ../../../third_party/skia/modules/canvaskit/postamble.js
 FILE: ../../../third_party/skia/modules/canvaskit/preamble.js
-FILE: ../../../third_party/skia/modules/canvaskit/ready.js
 FILE: ../../../third_party/skia/modules/canvaskit/release.js
 FILE: ../../../third_party/skia/modules/canvaskit/rt_shader.js
 FILE: ../../../third_party/skia/modules/canvaskit/skottie.js
@@ -1340,7 +1338,6 @@ FILE: ../../../third_party/skia/modules/pathkit/perf/effects.bench.js
 FILE: ../../../third_party/skia/modules/pathkit/perf/path.bench.js
 FILE: ../../../third_party/skia/modules/pathkit/perf/pathops.bench.js
 FILE: ../../../third_party/skia/modules/pathkit/perf/perfReporter.js
-FILE: ../../../third_party/skia/modules/pathkit/ready.js
 FILE: ../../../third_party/skia/modules/skparagraph/include/DartTypes.h
 FILE: ../../../third_party/skia/modules/skparagraph/include/FontCollection.h
 FILE: ../../../third_party/skia/modules/skparagraph/include/Metrics.h