Use NetworkConnectionObserver to trigger connect failure notifications

chromeos/network/network_connection_observer.h

Index: chromeos/network/network_connection_observer.h
diff --git a/chromeos/network/network_connection_observer.h b/chromeos/network/network_connection_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..d7aae7c2e3a87e781f4cd127c95d3427ed404c9a
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+++ b/chromeos/network/network_connection_observer.h
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+// 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.
+
+#ifndef CHROMEOS_NETWORK_NETWORK_CONNECTION_OBSERVER_H_
+#define CHROMEOS_NETWORK_NETWORK_CONNECTION_OBSERVER_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "chromeos/chromeos_export.h"
+
+namespace chromeos {
+
+// Observer class for network connection events.
+class CHROMEOS_EXPORT NetworkConnectionObserver {
+ public:
+  NetworkConnectionObserver();
+
+  // Called when a connection to network |service_path| is requested by
+  // calling NetworkConnectionHandler::ConnectToNetwork.
+  virtual void ConnectToNetworkRequested(const std::string& service_path);
+
+  // Called when a connection request succeeds.
+  virtual void ConnectSucceeded(const std::string& service_path);
+
+  // Called when a connection request fails. Valid error names are defined in
+  // NetworkConnectionHandler.
+  virtual void ConnectFailed(const std::string& service_path,
+                             const std::string& error_name);
+
+  // Called when a disconnect to network |service_path| is requested by
+  // calling NetworkConnectionHandler::DisconnectNetwork. Success or failure
+  // for disconnect is not tracked here, observe NetworkStateHandler for state
+  // changes instead.
+  virtual void DiconnectRequested(const std::string& service_path);
+
+ protected:
+  virtual ~NetworkConnectionObserver();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(NetworkConnectionObserver);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_NETWORK_NETWORK_CONNECTION_OBSERVER_H_