Roll ANGLE 7718c05..af344a1
Roll ANGLE 7718c05..af344a1

https://chromium.googlesource.com/angle/angle.git/+log/7718c05..af344a1

BUG=580045,522967
TBR=geofflang@chromium.org
TEST=bots

Review URL: https://codereview.chromium.org/1672113002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#373994}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk