Add NetworkListObserver utility class.

ppapi/utility/network_list_observer.h

Index: ppapi/utility/network_list_observer.h
diff --git a/ppapi/utility/network_list_observer.h b/ppapi/utility/network_list_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..698db2b1348af2a6d94d2d6b73ba509cc3eeec5f
--- /dev/null
+++ b/ppapi/utility/network_list_observer.h
@@ -0,0 +1,30 @@
+// 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 PPAPI_UTILITY_NETWORK_LIST_OBSERVER_H_
+#define PPAPI_UTILITY_NETWORK_LIST_OBSERVER_H_

[dmichael (off chromium), 2012/03/15 20:16:58]

It should probably go in a ppapi/utility/private directory

[Sergey Ulanov, 2012/03/15 23:44:08]

Done.

+
+#include "ppapi/cpp/private/network_monitor_private.h"
+
+namespace pp {
+
+class NetworkListPrivate;
+
+class NetworkListObserver {

[dmichael (off chromium), 2012/03/15 20:16:58]

Please add documentation.

[Sergey Ulanov, 2012/03/15 23:44:08]

Done.

+ public:
+  NetworkListObserver(const InstanceHandle& instance);

[dmichael (off chromium), 2012/03/15 20:16:58]

explicit

[Sergey Ulanov, 2012/03/15 23:44:08]

Done.

+  virtual ~NetworkListObserver();
+
+  virtual void OnNetworkList(const NetworkListPrivate& list) = 0;

[dmichael (off chromium), 2012/03/15 20:16:58]

What about OnReceiveNetworkList? It would be nice to have a verb in there.

[Sergey Ulanov, 2012/03/15 23:44:08]

Renamed to OnNetworkListChanged()

+
+ private:
+  static void NetworkListCallbackHandler(void* user_data,
+                                         PP_Resource list_resource);
+
+  NetworkMonitorPrivate monitor_;
+};
+
+}  // namespace pp
+
+#endif  // PPAPI_UTILITY_NETWORK_LIST_OBSERVER_H_