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

Test: ../../../../resources/webgl_test_files/deqp/functional/gles3/framebufferblit/conversion_18.html
[ 1: PASS ] blit.conversion.rg8_to_rgba8:
[ 2: FAIL ] blit.conversion.rg8_to_srgb8_alpha8:
[ 3: FAIL ] blit.conversion.rg8_to_rgb10_a2: glError: [object Object]
[ 4: PASS ] blit.conversion.rg8_to_rgba4:
[ 5: PASS ] blit.conversion.rg8_to_rgb5_a1:
[ 6: PASS ] blit.conversion.rg8_to_rgb8:
[ 7: FAIL ] blit.conversion.rg8_to_rgb565: glError: [object Object]
[ 8: PASS ] blit.conversion.rg8_to_rg8:
[ 9: FAIL ] blit.conversion.rg8_to_r8:
[ 10: PASS ] blit.conversion.rg8_to_r16f: successfullyParsed is true
[ FAIL ] 4 failures reported