Merge V8 5.4.500.40

Test: Manual - built & ran d8
Change-Id: I4edfa2853d3e565b729723645395688ece3193f4
diff --git a/src/compiler/js-call-reducer.h b/src/compiler/js-call-reducer.h
index 9ffae15..8d9700a 100644
--- a/src/compiler/js-call-reducer.h
+++ b/src/compiler/js-call-reducer.h
@@ -16,7 +16,7 @@
 class CommonOperatorBuilder;
 class JSGraph;
 class JSOperatorBuilder;
-
+class SimplifiedOperatorBuilder;
 
 // Performs strength reduction on {JSCallConstruct} and {JSCallFunction} nodes,
 // which might allow inlining or other optimizations to be performed afterwards.
@@ -52,6 +52,7 @@
   MaybeHandle<Context> native_context() const { return native_context_; }
   CommonOperatorBuilder* common() const;
   JSOperatorBuilder* javascript() const;
+  SimplifiedOperatorBuilder* simplified() const;
 
   JSGraph* const jsgraph_;
   Flags const flags_;