Migrate Object.prototype.valueOf to CSA

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index c487961fe4a1ebf9bbaf80153ef979c403d3df33..68a4934bbb471aceede8092f04ea8e37e3fe20d0 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1266,6 +1266,10 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
     SimpleInstallFunction(object_function, factory->values_string(),
                           Builtins::kObjectValues, 1, false);
 
+    Handle<JSFunction> object_value_of = SimpleInstallFunction(
+        isolate->initial_object_prototype(), "valueOf",
+        Builtins::kObjectPrototypeValueOf, 0, true);
+    native_context()->set_object_value_of(*object_value_of);
     SimpleInstallFunction(isolate->initial_object_prototype(),
                           "__defineGetter__", Builtins::kObjectDefineGetter, 2,
                           true);