Reapply "Mark private functions in dart:* that are native or constructors as not visible (omitted f…

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 38296c762c2c8c08669c187f9e5670595ff063b9..0929721cd6b51b79f1c93923fab4dc82b774bc97 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -2639,6 +2639,13 @@ class Library : public Object {
     raw_ptr()->debuggable_ = value;
   }
 
+  bool is_dart_scheme() const {
+    return raw_ptr()->is_dart_scheme_;
+  }
+  void set_is_dart_scheme(bool value) const {
+    raw_ptr()->is_dart_scheme_ = value;
+  }
+
   bool IsCoreLibrary() const {
     return raw() == CoreLibrary();
   }