[turbofan] Remove locally constructed simplified builders.

src/compiler/js-intrinsic-lowering.h

Index: src/compiler/js-intrinsic-lowering.h
diff --git a/src/compiler/js-intrinsic-lowering.h b/src/compiler/js-intrinsic-lowering.h
index 15e9b4053e7ef388d0b98de37317ce7e39ff3442..d33dd8bfa36a23fa6987118b27335f84306fc81d 100644
--- a/src/compiler/js-intrinsic-lowering.h
+++ b/src/compiler/js-intrinsic-lowering.h
@@ -7,7 +7,6 @@
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph-reducer.h"
-#include "src/compiler/simplified-operator.h"
 
 namespace v8 {
 namespace internal {
@@ -18,6 +17,7 @@ class CommonOperatorBuilder;
 class JSOperatorBuilder;
 class JSGraph;
 class MachineOperatorBuilder;
+class SimplifiedOperatorBuilder;
 
 
 // Lowers certain JS-level runtime calls.
@@ -72,12 +72,11 @@ class JSIntrinsicLowering final : public AdvancedReducer {
   CommonOperatorBuilder* common() const;
   JSOperatorBuilder* javascript() const;
   MachineOperatorBuilder* machine() const;
+  SimplifiedOperatorBuilder* simplified() const;
   DeoptimizationMode mode() const { return mode_; }
-  SimplifiedOperatorBuilder* simplified() { return &simplified_; }
 
   JSGraph* const jsgraph_;
   DeoptimizationMode const mode_;
-  SimplifiedOperatorBuilder simplified_;
 };
 
 }  // namespace compiler