Introduce single-parameter variant of QuicConfig::SetIdleNetworkTimeout

This will allow us to start transitioning clients that use the same value to the new method.

gfe-relnote: n/a, new unused code
PiperOrigin-RevId: 309333427
Change-Id: I98881d6c70e93976456fed5de12caeebb8b8d4a4
diff --git a/quic/core/quic_config.cc b/quic/core/quic_config.cc
index ba7413f..5a3e769 100644
--- a/quic/core/quic_config.cc
+++ b/quic/core/quic_config.cc
@@ -598,6 +598,10 @@
       static_cast<uint32_t>(default_idle_network_timeout.ToSeconds()));
 }
 
+void QuicConfig::SetIdleNetworkTimeout(QuicTime::Delta idle_network_timeout) {
+  SetIdleNetworkTimeout(idle_network_timeout, idle_network_timeout);
+}
+
 QuicTime::Delta QuicConfig::IdleNetworkTimeout() const {
   return QuicTime::Delta::FromSeconds(
       idle_network_timeout_seconds_.GetUint32());