Remove stl_util's deletion functions from:

net/tools/quic/test_tools/server_thread.cc

Index: net/tools/quic/test_tools/server_thread.cc
diff --git a/net/tools/quic/test_tools/server_thread.cc b/net/tools/quic/test_tools/server_thread.cc
index 5d50565c851006f7bdee03f6ccb59f60f64e7d2e..872aa4493861c44a33f978cc0f8d671d1ff6cb02 100644
--- a/net/tools/quic/test_tools/server_thread.cc
+++ b/net/tools/quic/test_tools/server_thread.cc
@@ -114,7 +114,7 @@ void ServerThread::MaybeNotifyOfHandshakeConfirmation() {
     // Wait for a session to be created.
     return;
   }
-  QuicSession* session = dispatcher->session_map().begin()->second;
+  QuicSession* session = dispatcher->session_map().begin()->second.get();
   if (session->IsCryptoHandshakeConfirmed()) {
     confirmed_.Signal();
   }