Collect all ConnectionAttempts from both sockets in TransportConnectJob.

net/socket/client_socket_handle.h

 // Copyright (c) 2012 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_CLIENT_SOCKET_HANDLE_H_
 #define NET_SOCKET_CLIENT_SOCKET_HANDLE_H_
 
 #include <string>
 
 #include "base/logging.h"
@@ skipping 138 matching lines @@
   }
   // On an ERR_PROXY_AUTH_REQUESTED error, the |headers| and |auth_challenge|
   // fields are filled in. On an ERR_SSL_CLIENT_AUTH_CERT_NEEDED error,
   // the |cert_request_info| field is set.
   const HttpResponseInfo& ssl_error_response_info() const {
     return ssl_error_response_info_;
   }
   ClientSocketHandle* release_pending_http_proxy_connection() {
     return pending_http_proxy_connection_.release();
   }
+  // If the connection failed, returns the connection attempts made. (If it
+  // succeeded, they will be returned through the socket instead; see
+  // |StreamSocket::GetConnectionAttempts|.)
   const ConnectionAttempts& connection_attempts() {
     return connection_attempts_;
   }
 
   StreamSocket* socket() { return socket_.get(); }
 
   // SetSocket() must be called with a new socket before this handle
   // is destroyed if is_initialized() is true.
   scoped_ptr<StreamSocket> PassSocket();
 
@@ skipping 74 matching lines @@
     user_callback_ = callback;
   } else {
     HandleInitCompletion(rv);
   }
   return rv;
 }
 
 }  // namespace net
 
 #endif  // NET_SOCKET_CLIENT_SOCKET_HANDLE_H_