[builtins] Migrate more Date builtins to TurboFan builtins.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 8ecaec1c3084d56869695c4ae1ab98128c311e01..b5835071638d529ac6e04cc00d3754c74a96a00f 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1813,7 +1813,7 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
     SimpleInstallFunction(prototype, "setUTCSeconds",
                           Builtins::kDatePrototypeSetUTCSeconds, 2, false);
     SimpleInstallFunction(prototype, "valueOf", Builtins::kDatePrototypeValueOf,
-                          0, false);
+                          0, true);
     SimpleInstallFunction(prototype, "getYear", Builtins::kDatePrototypeGetYear,
                           0, true);
     SimpleInstallFunction(prototype, "setYear", Builtins::kDatePrototypeSetYear,