Roll WebGL 7ca87fb..6d2f3f4

https://chromium.googlesource.com/external/khronosgroup/webgl.git/+log/7ca87fb..6d2f3f4

Tbr: kainino@chromium.org
Bug: 563816, 878545
Cq-Include-Trybots: luci.chromium.try:win_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_angle_rel_ng;luci.chromium.try:win_angle_rel_ng
Change-Id: I8c8b57fef830f85f26b231a6a22576d8f9159e0f
Reviewed-on: https://chromium-review.googlesource.com/1225605
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#592964}
2 files changed