Add P2PDatagramSocket and P2PStreamSocket interfaces.

remoting/protocol/pseudotcp_channel_factory.h

Index: remoting/protocol/pseudotcp_channel_factory.h
diff --git a/remoting/protocol/pseudotcp_channel_factory.h b/remoting/protocol/pseudotcp_channel_factory.h
index 884594026e12f5dc51977c44ae7329135571c15f..2d2dd89c14bd6ab86c30c29ccce2fe70cbe413be 100644
--- a/remoting/protocol/pseudotcp_channel_factory.h
+++ b/remoting/protocol/pseudotcp_channel_factory.h
@@ -14,6 +14,7 @@ namespace remoting {
 namespace protocol {
 
 class DatagramChannelFactory;
+class P2PDatagramSocket;
 
 // StreamChannelFactory that creates PseudoTCP-based stream channels that run on
 // top of datagram channels created using specified |datagram_channel_factory|.
@@ -30,11 +31,11 @@ class PseudoTcpChannelFactory : public StreamChannelFactory {
   void CancelChannelCreation(const std::string& name) override;
 
  private:
-  typedef std::map<std::string, net::StreamSocket*> PendingSocketsMap;
+  typedef std::map<std::string, P2PStreamSocket*> PendingSocketsMap;
 
   void OnDatagramChannelCreated(const std::string& name,
                                 const ChannelCreatedCallback& callback,
-                                scoped_ptr<net::Socket> socket);
+                                scoped_ptr<P2PDatagramSocket> socket);
   void OnPseudoTcpConnected(const std::string& name,
                             const ChannelCreatedCallback& callback,
                             int result);