Use NetworkConnectionObserver to trigger connect failure notifications

chromeos/network/network_connection_observer.cc

+// Copyright (c) 2014 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.
+
+#include "chromeos/network/network_connection_observer.h"
+
+namespace chromeos {
+
+void NetworkConnectionObserver::ConnectToNetworkRequested(
+    const std::string& service_path) {
+}
+
+void NetworkConnectionObserver::ConnectSucceeded(
+    const std::string& service_path) {
+}
+
+void NetworkConnectionObserver::ConnectFailed(const std::string& service_path,
+                                              const std::string& error_name) {
+}
+
+void NetworkConnectionObserver::DiconnectRequested(
+    const std::string& service_path) {
+}
+
+NetworkConnectionObserver::~NetworkConnectionObserver() {
+}
+
+}  // namespace chromeos