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

Test: ../../resources/webgl_test_files/conformance2/extensions/promoted-extensions.html
[ 1: PASS ] gl = wtu.create3DContext(undefined, undefined, 2) is non-null.
[ 2: PASS ] ANGLE_instanced_arrays was not exposed in the WebGL 2.0 context
[ 3: PASS ] EXT_blend_minmax was not exposed in the WebGL 2.0 context
[ 4: PASS ] EXT_color_buffer_half_float was not exposed in the WebGL 2.0 context
[ 5: PASS ] EXT_frag_depth was not exposed in the WebGL 2.0 context
[ 6: PASS ] EXT_shader_texture_lod was not exposed in the WebGL 2.0 context
[ 7: PASS ] EXT_sRGB was not exposed in the WebGL 2.0 context
[ 8: PASS ] OES_element_index_uint was not exposed in the WebGL 2.0 context
[ 9: PASS ] OES_standard_derivatives was not exposed in the WebGL 2.0 context
[ 10: FAIL ] OES_texture_float was exposed in the WebGL 2.0 context but should not have been
[ 11: FAIL ] OES_texture_half_float was exposed in the WebGL 2.0 context but should not have been
[ 12: FAIL ] OES_texture_half_float_linear was exposed in the WebGL 2.0 context but should not have been
[ 13: PASS ] OES_vertex_array_object was not exposed in the WebGL 2.0 context
[ 14: FAIL ] WEBGL_depth_texture was exposed in the WebGL 2.0 context but should not have been
[ 15: PASS ] WEBGL_draw_buffers was not exposed in the WebGL 2.0 context
[ 16: PASS ] successfullyParsed is true
[ FAIL ] 4 failures reported