With new releases of Chrome, Opera and Deno it is possible to stream the
body of a POST request. Add support for using that interface when it is
available.
Change-Id: Ib23d63cd3dea634bd9e267abf4e9a9bfa9c525ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/458395
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>