Bind a socket to a network if the network handle is set.

webrtc/base/asyncsocket.cc

Index: webrtc/base/asyncsocket.cc
diff --git a/webrtc/base/asyncsocket.cc b/webrtc/base/asyncsocket.cc
index db451c6382cbc48d1107c13103f1dfd7ad526a9a..bc011e222f8cdc59db766d6f5eb9c8ec9c93f15b 100644
--- a/webrtc/base/asyncsocket.cc
+++ b/webrtc/base/asyncsocket.cc
@@ -50,6 +50,10 @@ int AsyncSocketAdapter::Bind(const SocketAddress& addr) {
   return socket_->Bind(addr);
 }
 
+int AsyncSocketAdapter::BindToNetwork(NetworkHandle handle) {
+  return 0;
+}
+
 int AsyncSocketAdapter::Connect(const SocketAddress& addr) {
   return socket_->Connect(addr);
 }