In quic_client_bin.cc, print the "Request (succeeded|failed)" messages in stdout instead of stderr.
In quic_client_bin.cc, print the "Request (succeeded|failed)" messages in stdout instead of stderr.

gfe-relnote: (n/a) Tools only.
PiperOrigin-RevId: 248345426
Change-Id: Ic580baac5f7a90ed24dfcac60af857ae652a5e0d

google/quiche,google/quiche,google/quiche,google/quiche