New growth strategy for growable arrays

runtime/vm/class_finalizer.cc

Index: runtime/vm/class_finalizer.cc
diff --git a/runtime/vm/class_finalizer.cc b/runtime/vm/class_finalizer.cc
index 13ac6751d3612cac1c4d2e1a3ea87e1228f3a7be..dccc31a91f44da92e7996b231a71c1ac9255ac57 100644
--- a/runtime/vm/class_finalizer.cc
+++ b/runtime/vm/class_finalizer.cc
@@ -2422,7 +2422,7 @@ void ClassFinalizer::ApplyMixinMembers(const Class& cls) {
       cloned_funcs.Add(func);
     }
   }
-  functions = Array::MakeArray(cloned_funcs);
+  functions = Array::MakeFixedLength(cloned_funcs);
   cls.SetFunctions(functions);
 
   // Now clone the fields from the mixin class. There should be no
@@ -2657,7 +2657,8 @@ void ClassFinalizer::FinalizeClass(const Class& cls) {
     const Class& mixin_cls = Class::Handle(mixin_type.type_class());
 
     CreateForwardingConstructors(cls, mixin_cls, cloned_funcs);
-    const Array& functions = Array::Handle(Array::MakeArray(cloned_funcs));
+    const Array& functions =
+        Array::Handle(Array::MakeFixedLength(cloned_funcs));
     cls.SetFunctions(functions);
   }
   // Every class should have at least a constructor, unless it is a top level