Propagate connection info to Blimp android UI.

blimp/client/core/session/connection_status.h

Index: blimp/client/core/session/connection_status.h
diff --git a/blimp/client/core/session/connection_status.h b/blimp/client/core/session/connection_status.h
new file mode 100644
index 0000000000000000000000000000000000000000..4a1357016f88bff10c76a3a2de27e46a9479d39f
--- /dev/null
+++ b/blimp/client/core/session/connection_status.h
@@ -0,0 +1,58 @@
+// Copyright 2016 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 BLIMP_CLIENT_CORE_SESSION_CONNECTION_STATUS_H_
+#define BLIMP_CLIENT_CORE_SESSION_CONNECTION_STATUS_H_
+
+#include "base/macros.h"
+#include "base/observer_list.h"
+#include "blimp/client/core/session/network_event_observer.h"
+#include "blimp/client/public/session/assignment.h"
+#include "net/base/ip_endpoint.h"
+
+namespace blimp {
+namespace client {
+
+// Provides Blimp engine connection status, and also handles observers
+// that listen to network connection events on main thread.
+class ConnectionStatus {

[David Trainor- moved to gerrit, 2016/09/09 19:33:47]

Should this be a NetworkEventObserver and BlimpClientContextImpl can not be one.

[xingliu, 2016/09/10 22:45:47]

Done.

+ public:
+  ConnectionStatus();
+  ~ConnectionStatus();
+
+  // Return if the engine IP and port is valid.
+  bool IsValid() const;
+
+  // Get engine IP and port.
+  const net::IPEndPoint& GetIpEndPoint();
+
+  // Return if we connected to the engine.
+  bool IsConnected() const;
+
+  // Broadcast network events.
+  void AddObserver(NetworkEventObserver* observer);
+  void RemoveObserver(NetworkEventObserver* observer);
+
+  // Set connection states.
+  void onAssignmentResult(int result, const Assignment& assignment);

[David Trainor- moved to gerrit, 2016/09/09 19:33:47]

on -> On

[xingliu, 2016/09/10 22:45:46]

Done.

+  void OnConnected();
+  void OnDisconnected(int result);
+
+ private:
+  // Observers listen to session events.
+  base::ObserverList<NetworkEventObserver> connection_observers_;
+
+  // IP address and port of the engine.
+  net::IPEndPoint engine_endpoint_;
+
+  // If the client is currently connected.
+  bool is_connected_;
+
+  DISALLOW_COPY_AND_ASSIGN(ConnectionStatus);
+};
+
+}  // namespace client
+}  // namespace blimp
+
+#endif  // BLIMP_CLIENT_CORE_SESSION_CONNECTION_STATUS_H_