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

net/socket/connection_attempts.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef NET_SOCKET_CONNECTION_ATTEMPTS_H_
+#define NET_SOCKET_CONNECTION_ATTEMPTS_H_
+
+#include "net/base/ip_endpoint.h"
+
+namespace net {
+
+// A record of an connection attempt made to connect to a host. Includes TCP
+// and SSL errors, but not proxy connections.
+struct ConnectionAttempt {
+  ConnectionAttempt(const IPEndPoint endpoint, int result)
+      : endpoint(endpoint), result(result) {}
+
+  // Address and port the socket layer attempted to connect to.
+  IPEndPoint endpoint;
+
+  // Net error indicating the result of that attempt.
+  int result;
+};
+
+typedef std::vector<ConnectionAttempt> ConnectionAttempts;
+
+}  // namespace net
+
+#endif  // NET_SOCKET_CONNECTION_ATTEMPTS_H_