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The driver is generating GL_OUT_OF_MEMORY errors when it's used. Stop
exposing it to the application level.

BUG=702980
NOTRY=true

Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;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
Change-Id: I5d3ec20941ce0d032f37293db71926347a1652aa
Reviewed-on: https://chromium-review.googlesource.com/777982
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517693}