Fix inheritance of certain static members in VM

runtime/vm/class_finalizer.cc

Index: runtime/vm/class_finalizer.cc
===================================================================
--- runtime/vm/class_finalizer.cc	(revision 13896)
+++ runtime/vm/class_finalizer.cc	(working copy)
@@ -975,7 +975,7 @@
   while (!super_class.IsNull()) {
     // Check if a function of same name exists in any super class.
     function = super_class.LookupFunction(name);
-    if (!function.IsNull()) {
+    if (!function.IsNull() && !function.is_static()) {
       return super_class.raw();
     }
     super_class = super_class.SuperClass();