arc: enable use_new_wrapper_types for net.mojom

components/arc/net/arc_net_host_impl.h

Index: components/arc/net/arc_net_host_impl.h
diff --git a/components/arc/net/arc_net_host_impl.h b/components/arc/net/arc_net_host_impl.h
index c0114a990024a8547b2b3010f019d244cec3cdc2..3c56bbf74d06cf7b77e8c76ab47b8486854d7fa9 100644
--- a/components/arc/net/arc_net_host_impl.h
+++ b/components/arc/net/arc_net_host_impl.h
@@ -62,13 +62,13 @@ class ArcNetHostImpl : public ArcService,
   void CreateNetwork(mojom::WifiConfigurationPtr cfg,
                      const CreateNetworkCallback& callback) override;
 
-  void ForgetNetwork(const mojo::String& guid,
+  void ForgetNetwork(const std::string& guid,
                      const ForgetNetworkCallback& callback) override;
 
-  void StartConnect(const mojo::String& guid,
+  void StartConnect(const std::string& guid,
                     const StartConnectCallback& callback) override;
 
-  void StartDisconnect(const mojo::String& guid,
+  void StartDisconnect(const std::string& guid,
                        const StartDisconnectCallback& callback) override;
 
   // Overriden from chromeos::NetworkStateHandlerObserver.