Change QuicSpdySession::SendMaxPushId() to use max_allowed_push_id_ instead of requiring the caller to pass it in explicitly. Also clean up the implementation of QuicSpdySession::set_max_allowed_push_id() and rename it to SetMaxAllowedPushId() to match the style guide. gfe-relnote: Clean up QuicSpdySession::set_max_allowed_push_id. Protected by disabled QUIC v99 flag. PiperOrigin-RevId: 274851971 Change-Id: Ie4c6ad9aba91a4a26a9d13ebbff4a4399f9d10a9