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

Test: ../../resources/webgl_test_files/conformance2/glsl3/valid-invariant.html
[ 1: FAIL ] [unexpected link status] vertex shader with invariant varying and fragment shader with variant varying must succeed
[ 2: FAIL ] [unexpected link status] vertex shader with invariant (global setting) varying and fragment shader with variant varying must succeed
[ 3: FAIL ] [unexpected link status] vertex shader with invariant (separately set) varying and fragment shader with variant varying must succeed
[ 4: PASS ] successfullyParsed is true
[ FAIL ] 3 failures reported