[turbofan] Move SimplifiedOperatorBuilder into JSGraph.

test/unittests/compiler/change-lowering-unittest.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-stubs.h"
 #include "src/compiler/change-lowering.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/simplified-operator.h"
@@ skipping 18 matching lines @@
 
   virtual MachineType WordRepresentation() const = 0;
 
  protected:
   bool Is32() const { return WordRepresentation() == kRepWord32; }
   bool Is64() const { return WordRepresentation() == kRepWord64; }
 
   Reduction Reduce(Node* node) {
     MachineOperatorBuilder machine(zone(), WordRepresentation());
     JSOperatorBuilder javascript(zone());
-    JSGraph jsgraph(isolate(), graph(), common(), &javascript, &machine);
+    JSGraph jsgraph(isolate(), graph(), common(), &javascript, nullptr,
+                    &machine);
     ChangeLowering reducer(&jsgraph);
     return reducer.Reduce(node);
   }
 
   SimplifiedOperatorBuilder* simplified() { return &simplified_; }
 
   Matcher<Node*> IsAllocateHeapNumber(const Matcher<Node*>& effect_matcher,
                                       const Matcher<Node*>& control_matcher) {
     return IsCall(
         _, IsHeapConstant(AllocateHeapNumberStub(isolate()).GetCode()),
@@ skipping 409 matching lines @@
                       CaptureEq(&branch),
                       IsBranch(IsUint32LessThanOrEqual(
                                    value, IsInt32Constant(Smi::kMaxValue)),
                                graph()->start()))),
                   AllOf(CaptureEq(&if_false), IsIfFalse(CaptureEq(&branch))))));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8