Roll third_party/externals/angle2/ 6c7ab7fe8..6c59e4a15 (3 commits)

https://chromium.googlesource.com/angle/angle.git/+log/6c7ab7fe8d8c..6c59e4a156c3

$ git log 6c7ab7fe8..6c59e4a15 --date=short --no-merges --format='%ad %ae %s'
2018-04-05 pwnall Migrate from <tr1/tuple> to <tuple> types.
2018-03-31 jmadill Add two new fields to angle::Format.
2018-03-31 jmadill Vulkan: Update resource dependency semantics.

Created with:
  roll-dep third_party/externals/angle2


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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
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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=borenet@google.com

Change-Id: I3dd3ce351c7986816c65e917d688d4efb0ae53f9
Reviewed-on: https://skia-review.googlesource.com/119900
Reviewed-by: <angle-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: <angle-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>

0 files changed, 0 insertions, 0 deletions