Modify feature testing to avoid warnings in Chrome
Modify feature testing to avoid warnings in Chrome

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.

jhiesey/stream-http,regular/stream-http,mbcrute/stream-http,jhiesey/httpstream