Update some callers to use more direct ways of constructing IPAddress from well known literals.

net/tools/quic/quic_simple_client.cc

Index: net/tools/quic/quic_simple_client.cc
diff --git a/net/tools/quic/quic_simple_client.cc b/net/tools/quic/quic_simple_client.cc
index 4c2b221660584287aceb62efe9790bdff4096e11..b1dcf192190f366b9b4ae19aa2e063bc3aefebcb 100644
--- a/net/tools/quic/quic_simple_client.cc
+++ b/net/tools/quic/quic_simple_client.cc
@@ -107,11 +107,9 @@ bool QuicSimpleClient::CreateUDPSocket() {
   if (bind_to_address_.size() != 0) {
     client_address_ = IPEndPoint(bind_to_address_, local_port_);
   } else if (address_family == AF_INET) {
-    client_address_ = IPEndPoint(IPAddress(0, 0, 0, 0), local_port_);
+    client_address_ = IPEndPoint(IPAddress::IPv4AllZeros(), local_port_);
   } else {
-    IPAddress any6;
-    CHECK(any6.AssignFromIPLiteral("::"));
-    client_address_ = IPEndPoint(any6, local_port_);
+    client_address_ = IPEndPoint(IPAddress::IPv6AllZeros(), local_port_);
   }
 
   int rc = socket->Connect(server_address_);