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

Test: ../../../../resources/webgl_test_files/deqp/functional/gles3/vertexarrays/multiple_attributes.storage.html
[ 1: FAIL ] vertex_arrays.multiple_attributes.storage.3_buffer_buffer_buffer: Could not map pixel format:[object Object]
[ 2: PASS ] vertex_arrays.multiple_attributes.storage.3_buffer_buffer_buffer: successfullyParsed is true
[ FAIL ] 1 failure reported