Avoid usage of temporary MachineOperatorBuilder.

test/cctest/compiler/test-representation-change.cc

Index: test/cctest/compiler/test-representation-change.cc
diff --git a/test/cctest/compiler/test-representation-change.cc b/test/cctest/compiler/test-representation-change.cc
index 36da572b4aaa99c32a42fc764429d6cfa6213972..9c55a802c2c924961b3b034e4f21e4a3ad4d658d 100644
--- a/test/cctest/compiler/test-representation-change.cc
+++ b/test/cctest/compiler/test-representation-change.cc
@@ -28,7 +28,7 @@ class RepresentationChangerTester : public HandleAndZoneScope,
         javascript_(main_zone()),
         jsgraph_(main_graph_, &main_common_, &javascript_, &typer_,
                  &main_machine_),
-        changer_(&jsgraph_, &main_simplified_, &main_machine_, main_isolate()) {
+        changer_(&jsgraph_, &main_simplified_, main_isolate()) {
     Node* s = graph()->NewNode(common()->Start(num_parameters));
     graph()->SetStart(s);
   }