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/default_framebuffer_06.html
[ 1: FAIL ] blit.default_framebuffer.rgb565:
[ 2: FAIL ] blit.default_framebuffer.rgb565_nearest_scale_blit_from_default: glError: INVALID_ENUM
[ 3: FAIL ] blit.default_framebuffer.rgb565_nearest_scale_blit_to_default:
[ 4: FAIL ] blit.default_framebuffer.rgb565_linear_scale_blit_from_default: glError: INVALID_ENUM
[ 5: FAIL ] blit.default_framebuffer.rgb565_linear_scale_blit_to_default:
[ 6: FAIL ] blit.default_framebuffer.rgb565_linear_out_of_bounds_blit_from_default: glError: INVALID_ENUM
[ 7: FAIL ] blit.default_framebuffer.rgb565_linear_out_of_bounds_blit_to_default:
[ 8: PASS ] blit.default_framebuffer.r16f_linear_out_of_bounds_blit_to_default: successfullyParsed is true
[ FAIL ] 7 failures reported