[turbofan] Move SimplifiedOperatorBuilder into JSGraph.

test/unittests/compiler/js-context-relaxation-unittest.cc

 // Copyright 2015 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/compiler/js-context-relaxation.h"
 #include "src/compiler/js-graph.h"
 #include "test/unittests/compiler/graph-unittest.h"
 #include "test/unittests/compiler/node-test-utils.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 class JSContextRelaxationTest : public GraphTest {
  public:
   JSContextRelaxationTest() : GraphTest(3), javascript_(zone()) {}
   ~JSContextRelaxationTest() override {}
 
  protected:
   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());
     JSContextRelaxation reducer;
     return reducer.Reduce(node);
   }
 
   Node* EmptyFrameState() {
     MachineOperatorBuilder machine(zone());
-    JSGraph jsgraph(isolate(), graph(), common(), javascript(), &machine);
+    JSGraph jsgraph(isolate(), graph(), common(), javascript(), nullptr,
+                    &machine);
     return jsgraph.EmptyFrameState();
   }
 
   Node* ShallowFrameStateChain(Node* outer_context,
                                ContextCallingMode context_calling_mode) {
     const FrameStateFunctionInfo* const frame_state_function_info =
         common()->CreateFrameStateFunctionInfo(
             FrameStateType::kJavaScriptFunction, 3, 0,
             Handle<SharedFunctionInfo>(), context_calling_mode);
     const Operator* op = common()->FrameState(BailoutId::None(),
@@ skipping 243 matching lines @@
                                                   STRICT, VectorSlotPair()),
                        input0, input1, context, frame_state_2, effect, control);
   Reduction const r = Reduce(node);
   EXPECT_FALSE(r.Changed());
   EXPECT_EQ(context, NodeProperties::GetContextInput(node));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8