Revert "This is a speculative chain of reverts to improve a Chrome"

src/bootstrapper.h

Index: src/bootstrapper.h
diff --git a/src/bootstrapper.h b/src/bootstrapper.h
index 81ef396e06b5e2a9dedab4e58f9be116c12bca4e..81acc68afbc3a888cdbe3fe1473550dbfceb291b 100644
--- a/src/bootstrapper.h
+++ b/src/bootstrapper.h
@@ -116,7 +116,6 @@ class Bootstrapper final {
                             Handle<String> source, int argc,
                             Handle<Object> argv[], NativesFlag natives_flag);
   static bool CompileBuiltin(Isolate* isolate, int index);
-  static bool CompileExperimentalBuiltin(Isolate* isolate, int index);
   static bool CompileExtraBuiltin(Isolate* isolate, int index);
   static bool CompileExperimentalExtraBuiltin(Isolate* isolate, int index);