Re-write many calls to WrapUnique() with MakeUnique()

net/tools/get_server_time/get_server_time.cc

Index: net/tools/get_server_time/get_server_time.cc
diff --git a/net/tools/get_server_time/get_server_time.cc b/net/tools/get_server_time/get_server_time.cc
index ec30690f020e6cc3ee48c6d55bfc49ddd8e767c8..48ea2bb5b8734f1e9843d20554fcdfe4f8a23569 100644
--- a/net/tools/get_server_time/get_server_time.cc
+++ b/net/tools/get_server_time/get_server_time.cc
@@ -146,7 +146,7 @@ std::unique_ptr<net::URLRequestContext> BuildURLRequestContext(
   //
   // TODO(akalin): Remove this once http://crbug.com/146421 is fixed.
   builder.set_proxy_config_service(
-      base::WrapUnique(new net::ProxyConfigServiceFixed(net::ProxyConfig())));
+      base::MakeUnique<net::ProxyConfigServiceFixed>(net::ProxyConfig()));
 #endif
   std::unique_ptr<net::URLRequestContext> context(builder.Build());
   context->set_net_log(net_log);