[turbofan] Move SimplifiedOperatorBuilder into JSGraph.

test/unittests/compiler/js-intrinsic-lowering-unittest.cc

Index: test/unittests/compiler/js-intrinsic-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-intrinsic-lowering-unittest.cc b/test/unittests/compiler/js-intrinsic-lowering-unittest.cc
index 9d5b6494717501120ea1f471bdc6e6128a907ea9..d967da27e828b5ee19f0b764e83db84ca1cd28de 100644
--- a/test/unittests/compiler/js-intrinsic-lowering-unittest.cc
+++ b/test/unittests/compiler/js-intrinsic-lowering-unittest.cc
@@ -32,7 +32,8 @@ class JSIntrinsicLoweringTest : public GraphTest {
   Reduction Reduce(Node* node, MachineOperatorBuilder::Flags flags =
                                    MachineOperatorBuilder::kNoFlags) {
     MachineOperatorBuilder machine(zone(), kMachPtr, flags);
-    JSGraph jsgraph(isolate(), graph(), common(), javascript(), &machine);
+    JSGraph jsgraph(isolate(), graph(), common(), javascript(), nullptr,
+                    &machine);
     // TODO(titzer): mock the GraphReducer here for better unit testing.
     GraphReducer graph_reducer(zone(), graph());
     JSIntrinsicLowering reducer(&graph_reducer, &jsgraph,
@@ -42,7 +43,8 @@ class JSIntrinsicLoweringTest : public GraphTest {
 
   Node* EmptyFrameState() {
     MachineOperatorBuilder machine(zone());
-    JSGraph jsgraph(isolate(), graph(), common(), javascript(), &machine);
+    JSGraph jsgraph(isolate(), graph(), common(), javascript(), nullptr,
+                    &machine);
     return jsgraph.EmptyFrameState();
   }