[turbofan] Optimize typeof operator without storing strings in Type

src/compiler/js-typed-lowering.h

Index: src/compiler/js-typed-lowering.h
diff --git a/src/compiler/js-typed-lowering.h b/src/compiler/js-typed-lowering.h
index 9455ad14a0b9d07ce9ee5308f3b5e5c29eb37517..d4c9d10e25f427a1809df3c57c0da4217803736c 100644
--- a/src/compiler/js-typed-lowering.h
+++ b/src/compiler/js-typed-lowering.h
@@ -70,6 +70,7 @@ class JSTypedLowering final : public AdvancedReducer {
   Reduction ReduceJSGeneratorStore(Node* node);
   Reduction ReduceJSGeneratorRestoreContinuation(Node* node);
   Reduction ReduceJSGeneratorRestoreRegister(Node* node);
+  Reduction ReduceJSTypeOf(Node* node);
   Reduction ReduceNumberBinop(Node* node);
   Reduction ReduceInt32Binop(Node* node);
   Reduction ReduceUI32Shift(Node* node, Signedness signedness);