Enable KHR_parallel_shader_compile extension

This updates the khronos GL headers to incorporate the missing
API declarations for the extension.
This also regenerates the ui/gl binding accordingly.

BUG=849576

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: I2ce5b91e7459f518593924b55621896ed4825510
Reviewed-on: https://chromium-review.googlesource.com/1201353
Reviewed-by: Antoine Labour <piman@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Jie A Chen <jie.a.chen@intel.com>
Cr-Original-Commit-Position: refs/heads/master@{#590900}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 6725bad11873b4bcf1a2d5ca654c502830e4b81c
4 files changed