MergeNetworkList can't group address under the same interface

content/renderer/p2p/network_list_manager.h

Index: content/renderer/p2p/network_list_manager.h
diff --git a/content/renderer/p2p/network_list_manager.h b/content/renderer/p2p/network_list_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..c0e0f58bdae37d2cbbfcb5193fe68ed34195813f
--- /dev/null
+++ b/content/renderer/p2p/network_list_manager.h
@@ -0,0 +1,38 @@
+// Copyright 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.
+
+// NetworkListManager interface is introduced to enable unit test on
+// IpcNetworkManager such that it doesn't depend on implementation of
+// P2PSocketDispatcher.
+
+#ifndef CONTENT_RENDERER_P2P_NETWORK_LIST_MANAGER_H_
+#define CONTENT_RENDERER_P2P_NETWORK_LIST_MANAGER_H_
+
+namespace content {
+
+class NetworkListObserver;
+
+class CONTENT_EXPORT NetworkListManager {
+ public:
+  // Add a new network list observer. Each observer is called
+  // immidiately after it is registered and then later whenever
+  // network configuration changes. Can be called on any thread. The
+  // observer is always called on the thread it was added.
+  virtual void AddNetworkListObserver(
+      NetworkListObserver* network_list_observer) = 0;
+
+  // Removes network list observer. Must be called on the thread on
+  // which the observer was added.
+  virtual void RemoveNetworkListObserver(
+      NetworkListObserver* network_list_observer) = 0;
+
+ protected:
+  // Marked as protected to prevent explicit deletion, as
+  // P2PSocketDispatcher is not owned by IpcNetworkManager.
+  virtual ~NetworkListManager() {}
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_P2P_NETWORK_LIST_MANAGER_H_