[turbofan] Move SimplifiedOperatorBuilder into JSGraph.

test/unittests/compiler/js-type-feedback-unittest.cc

Index: test/unittests/compiler/js-type-feedback-unittest.cc
diff --git a/test/unittests/compiler/js-type-feedback-unittest.cc b/test/unittests/compiler/js-type-feedback-unittest.cc
index f3f1b733fc75462d0b31f8f0ce783de324ccffec..3ed9df7aa904fc22950f99e9cb295c31a07b9469 100644
--- a/test/unittests/compiler/js-type-feedback-unittest.cc
+++ b/test/unittests/compiler/js-type-feedback-unittest.cc
@@ -40,7 +40,8 @@ class JSTypeFeedbackTest : public TypedGraphTest {
         isolate()->native_context()->global_object(), isolate());
 
     MachineOperatorBuilder machine(zone());
-    JSGraph jsgraph(isolate(), graph(), common(), javascript(), &machine);
+    JSGraph jsgraph(isolate(), graph(), common(), javascript(), nullptr,
+                    &machine);
     JSTypeFeedbackTable table(zone());
     // TODO(titzer): mock the GraphReducer here for better unit testing.
     GraphReducer graph_reducer(zone(), graph());
@@ -51,7 +52,8 @@ class JSTypeFeedbackTest : public TypedGraphTest {
 
   Node* EmptyFrameState() {
     MachineOperatorBuilder machine(zone());
-    JSGraph jsgraph(isolate(), graph(), common(), javascript(), &machine);
+    JSGraph jsgraph(isolate(), graph(), common(), javascript(), nullptr,
+                    &machine);
     return jsgraph.EmptyFrameState();
   }