Plumb connection attempts from (non-proxy) ConnectJobs to HttpNetworkTransaction.

net/socket/transport_client_socket_pool.h

Index: net/socket/transport_client_socket_pool.h
diff --git a/net/socket/transport_client_socket_pool.h b/net/socket/transport_client_socket_pool.h
index 48ddd1334fab5974b651eb04bc293ac885f9bd49..f1af37585886d126feec00b14e8338e6a2e685d3 100644
--- a/net/socket/transport_client_socket_pool.h
+++ b/net/socket/transport_client_socket_pool.h
@@ -167,6 +167,7 @@ class NET_EXPORT_PRIVATE TransportConnectJob : public ConnectJob {
 
   // ConnectJob methods.
   LoadState GetLoadState() const override;
+  void GetAdditionalErrorState(ClientSocketHandle* handle) override;
 
   // Rolls |addrlist| forward until the first IPv4 address, if any.
   // WARNING: this method should only be used to implement the prefer-IPv4 hack.
@@ -207,6 +208,8 @@ class NET_EXPORT_PRIVATE TransportConnectJob : public ConnectJob {
   // Track the interval between this connect and previous connect.
   ConnectInterval interval_between_connects_;
 
+  int connect_result_;
+
   DISALLOW_COPY_AND_ASSIGN(TransportConnectJob);
 };