commit 21f75e536140c26df267a20dfd6475a7e87c6072
author kainino <kainino@chromium.org> Tue Dec 13 23:35:56 2016
committer Commit bot <commit-bot@chromium.org> Tue Dec 13 23:38:59 2016
tree c1b766d7e7927c0b90fea9c8b28d923164b383e6
parent 16f66a38edc9d1b63276df3fdfc673138e18a917

improve feature detection for S3TC+sRGB textures

This should _actually_ enable WEBGL_compressed_texture_s3tc_srgb on Mac
(and potentially some other platforms that support but do not advertise
EXT_texture_sRGB). It will also enable it on ANGLE, once ANGLE
implements the currently-draft OpenGL ES extension
EXT_compressed_texture_s3tc_srgb.

BUG=630498
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2569763003
Cr-Commit-Position: refs/heads/master@{#438337}