Remove OSMesa from the chromium repo

Now that SwiftShader has been integrated into every platform on every test,
we can remove OSMesa from the chromium codebase.

BUG=chromium:873321

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_chromium_dbg_ng;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Ie75c73c172aaffd17a3e041aa7f4cf37a96c3d4d
Reviewed-on: https://chromium-review.googlesource.com/1128207
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Reviewed-by: Mohsen Izadi <mohsen@chromium.org>
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Cait Phillips <caitkp@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Alexis Hétu <sugoi@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#582655}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 0f21886190d0c27515faec2ada23541b936fb0f3
1 file changed