Roll skia/third_party/externals/angle2/ a4ef843fe..20c46284f (2 commits)

https://chromium.googlesource.com/angle/angle.git/+log/a4ef843fe0de..20c46284f286

$ git log a4ef843fe..20c46284f --date=short --no-merges --format='%ad %ae %s'
2018-02-22 jgilbert Make OpenSharedResource() call become fallible in SwapChain11::resetOffscreenColorBuffer().
2018-02-22 jgilbert Remove unused include of math.h in matrix_utils.h.

Created with:
  roll-dep skia/third_party/externals/angle2


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

If the roll is causing failures, please contact the current sheriff, who should
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CQ_INCLUDE_TRYBOTS=skia.primary:Perf-Win10-Clang-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-All-ANGLE,Perf-Win10-Clang-NUC5i7RYH-GPU-IntelIris6100-x86_64-Debug-All-ANGLE,Perf-Win10-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-All-ANGLE,Perf-Win10-Clang-NUCD34010WYKH-GPU-IntelHD4400-x86_64-Debug-All-ANGLE,Perf-Win10-Clang-ShuttleC-GPU-GTX960-x86_64-Debug-All-ANGLE,Test-Win10-Clang-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-All-ANGLE,Test-Win10-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-All-ANGLE,Test-Win10-Clang-NUCD34010WYKH-GPU-IntelHD4400-x86_64-Debug-All-ANGLE,Test-Win10-Clang-ShuttleC-GPU-GTX960-x86_64-Debug-All-ANGLE,Build-Debian9-Clang-x86_64-Release-ANGLE
TBR=djsollen@google.com

Change-Id: I7def7023f3acb27c2dc8066aef271e93a5a61913
Reviewed-on: https://skia-review.googlesource.com/109980
Commit-Queue: <angle-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: <angle-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
1 file changed