Roll third_party/externals/angle2 dfaccbc08abb..a7af56be7a6c (3 commits)

https://chromium.googlesource.com/angle/angle.git/+log/dfaccbc08abb..a7af56be7a6c


git log dfaccbc08abb..a7af56be7a6c --date=short --no-merges --format='%ad %ae %s'
2018-12-14 geofflang@chromium.org Vulkan: Print the device id in the renderer string.
2018-12-14 geofflang@chromium.org GL: Clean up workaround detection.
2018-12-14 jmadill@chromium.org Fix compile error in angle_white_box_perftests.


Created with:
  gclient setdep -r third_party/externals/angle2@a7af56be7a6c

The AutoRoll server is located here: https://autoroll.skia.org/r/angle-skia-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

CQ_INCLUDE_TRYBOTS=skia.primary:Build-Debian9-Clang-x86_64-Release-ANGLE;skia.primary:Perf-Win10-Clang-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-All-ANGLE;skia.primary:Perf-Win10-Clang-NUC5i7RYH-GPU-IntelIris6100-x86_64-Debug-All-ANGLE;skia.primary:Perf-Win10-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-All-ANGLE;skia.primary:Perf-Win10-Clang-NUCD34010WYKH-GPU-IntelHD4400-x86_64-Debug-All-ANGLE;skia.primary:Perf-Win10-Clang-ShuttleC-GPU-GTX960-x86_64-Debug-All-ANGLE;skia.primary:Test-Win10-Clang-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-All-ANGLE;skia.primary:Test-Win10-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-All-ANGLE;skia.primary:Test-Win10-Clang-NUCD34010WYKH-GPU-IntelHD4400-x86_64-Debug-All-ANGLE;skia.primary:Test-Win10-Clang-ShuttleC-GPU-GTX960-x86_64-Debug-All-ANGLE
TBR=ethannicholas@google.com

Change-Id: I183d877d19a4a1a4e3e4f81da060986abd555554
Reviewed-on: https://skia-review.googlesource.com/c/177845
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
1 file changed