Previously, testing for 'ms-stream' and 'moz-chunked-arraybuffer' support on the xhr object caused warnings to appear in Chrome. Since fetch will always be used instead of these when available, short-circuit and return false when fetch is available.
Previously, testing for 'ms-stream' and 'moz-chunked-arraybuffer' support on the xhr object caused warnings to appear in Chrome. Since fetch will always be used instead of these when available, short-circuit and return false when fetch is available.