Convert Pass()→std::move() for iOS build.

net/socket/client_socket_factory.cc

Index: net/socket/client_socket_factory.cc
diff --git a/net/socket/client_socket_factory.cc b/net/socket/client_socket_factory.cc
index cc2a243c91aa2494a33337010b2c98a8c02d4ebc..311f926b59fcefdc3f2c9be276d025c0251dfcd3 100644
--- a/net/socket/client_socket_factory.cc
+++ b/net/socket/client_socket_factory.cc
@@ -76,7 +76,7 @@ class DefaultClientSocketFactory : public ClientSocketFactory,
         std::move(transport_socket), host_and_port, ssl_config, context));
 #else
     return scoped_ptr<SSLClientSocket>(new SSLClientSocketNSS(
-        transport_socket.Pass(), host_and_port, ssl_config, context));
+        std::move(transport_socket), host_and_port, ssl_config, context));
 #endif
   }