This test runs the WebGL Test listed below in an iframe and reports PASS or FAIL.

Test: ../../../../resources/webgl_test_files/deqp/functional/gles3/texturefiltering/cube_formats_04.html
[ 1: FAIL ] filtering.cube_formats.rgba8_snorm_nearest: gl.createProgram()
[ 2: FAIL ] filtering.cube_formats.rgba8_snorm_linear: gl.createProgram()
[ 3: FAIL ] filtering.cube_formats.rgba8_snorm_nearest_mipmap_nearest: gl.createProgram()
[ 4: FAIL ] filtering.cube_formats.rgba8_snorm_linear_mipmap_nearest: gl.createProgram()
[ 5: FAIL ] filtering.cube_formats.rgba8_snorm_nearest_mipmap_linear: gl.createProgram()
[ 6: FAIL ] filtering.cube_formats.rgba8_snorm_linear_mipmap_linear: gl.createProgram()
[ 7: PASS ] successfullyParsed is true
[ FAIL ] 6 failures reported