Disallow copying of NetworkListObserverPrivate.

ppapi/utility/private/network_list_observer_private.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 PPAPI_UTILITY_PRIVATE_NETWORK_LIST_OBSERVER_H_
 #define PPAPI_UTILITY_PRIVATE_NETWORK_LIST_OBSERVER_H_
 
 #include "ppapi/cpp/private/network_monitor_private.h"
 
 namespace pp {
@@ skipping 13 matching lines @@
 
  protected:
   /// Called once after this object is created and later every time
   /// network configuration changes. Child classes must implement this
   /// method.
   ///
   /// @param[in] list The current list of network interfaces.
   virtual void OnNetworkListChanged(const NetworkListPrivate& list) = 0;
 
  private:
+  // Private copy constructor and assign operator to disallow copying of this
+  // object. This is necessary to guarantee that |monitor_| is not shared with
+  // another list observer and is always destroyed when this object is
+  // destroyed.
+  NetworkListObserverPrivate(const NetworkListObserverPrivate&);
+  void operator=(const NetworkListObserverPrivate&);
+
   static void NetworkListCallbackHandler(void* user_data,
                                          PP_Resource list_resource);
 
   NetworkMonitorPrivate monitor_;
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_UTILITY_PRIVATE_NETWORK_LIST_OBSERVER_H_