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

Test: ../../../../resources/webgl_test_files/deqp/functional/gles3/fborender/stencil_clear.html
[ 1: FAIL ] render.stencil_clear.tex2d_rgba8_stencil_rbo_depth32f_stencil8: FRAMEBUFFER_INCOMPLETE_ATTACHMENT
[ 2: FAIL ] render.stencil_clear.tex2d_rgba8_stencil_rbo_depth24_stencil8: gl.createProgram()
[ 3: FAIL ] render.stencil_clear.tex2d_rgba8_stencil_rbo_stencil_index8: Image comparison failed
[ 4: PASS ] successfullyParsed is true
[ FAIL ] 3 failures reported