Roll src/third_party/skia ccca30aad770..6344c2937997 (13 commits) (flutter#14133)

https://skia.googlesource.com/skia.git/+log/ccca30aad770..6344c2937997

git log ccca30aad770..6344c2937997 --date=short --first-parent --format='%ad %ae %s'
2019-12-04 reed@google.com some cleanups for halfplanes
2019-12-04 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-12-04 egdaniel@google.com Remove unneeded abandon/release check in GrGpuResource message processing.
2019-12-04 bsalomon@google.com Remove SkSize& SkSize::operator=(const SkISize&)
2019-12-04 halcanary@google.com SkQP: model-creation improvements
2019-12-04 mtklein@google.com work around GCC false positive warning?
2019-12-04 egdaniel@google.com Handle failures in submission of vulkan command buffers.
2019-12-04 mtklein@google.com replace SkIRect[1] with SkIRect
2019-12-04 bsalomon@google.com Fix for 420/422 chroma subsampling of odd dimension images when converting from YUV to RGB on GPU.
2019-12-04 reed@google.com Reland "remove legacy SkPath enum guards"
2019-12-04 robertphillips@google.com Add onPrePrepareDraws to GrFillRectOp
2019-12-04 mtklein@google.com simpler tmp arrays in GrGLPath
2019-12-04 senorblanco@chromium.org Update dawn.h -> webgpu.h, dawn_cpp.h -> webgpu_cpp.h.

Created with:
  gclient setdep -r src/third_party/skia@6344c2937997

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 bsalomon@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/+/master/autoroll/README.md

Bug: None
Tbr: bsalomon@google.com

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': 'ccca30aad77057fbceb7c752298d6b014e6124eb',
+  'skia_revision': '6344c2937997f12221a5c233803a3f2d19f2111f',
 
   # 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: 9c6af5b78e12bbd4d35385b64ff60302
+Signature: c40417f6dd64a7cc0b09b7dfc92ebfe1
 
 UNUSED LICENSES:
 
@@ -3083,6 +3083,7 @@ FILE: ../../../third_party/skia/gm/skbug_8664.cpp
 FILE: ../../../third_party/skia/gm/skbug_8955.cpp
 FILE: ../../../third_party/skia/gm/skvm.cpp
 FILE: ../../../third_party/skia/gm/video_decoder.cpp
+FILE: ../../../third_party/skia/gm/yuv420_odd_dim.cpp
 FILE: ../../../third_party/skia/include/core/SkTileMode.h
 FILE: ../../../third_party/skia/include/gpu/GrContextThreadSafeProxy.h
 FILE: ../../../third_party/skia/include/gpu/dawn/GrDawnTypes.h