Added unit test for DevTools' ephemeral port support.

net/socket/stream_listen_socket.h

Index: net/socket/stream_listen_socket.h
diff --git a/net/socket/stream_listen_socket.h b/net/socket/stream_listen_socket.h
index 90b54500ace17f2f28631f3fa8449e644564f298..813d96a22be8f19dfb3cddb90c8d1f90707e8c6e 100644
--- a/net/socket/stream_listen_socket.h
+++ b/net/socket/stream_listen_socket.h
@@ -72,9 +72,11 @@ class NET_EXPORT StreamListenSocket
   void Send(const std::string& str, bool append_linefeed = false);
 
   // Copies the local address to |address|. Returns a network error code.
-  int GetLocalAddress(IPEndPoint* address);
+  // This method is virtual to support unit testing.
+  virtual int GetLocalAddress(IPEndPoint* address);
   // Copies the peer address to |address|. Returns a network error code.
-  int GetPeerAddress(IPEndPoint* address);
+  // This method is virtual to support unit testing.
+  virtual int GetPeerAddress(IPEndPoint* address);
 
   static const int kSocketError;