This is ported from WebGL CTS which is used to verify a ES 3.0 bug in
NVIDIA Linux, Windows OpenGL, and Mac OSX.
BUG=chromium:678526
TEST=angle_end2end_tests
Change-Id: Ifb6e1ba52d45144c544beab21f1ad4a98b1b0f65
Reviewed-on: https://chromium-review.googlesource.com/426007
Commit-Queue: Qiankun Miao <qiankun.miao@intel.com>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
