Make ClassFinalizer indifferent on whether we are generating a snapshot or not.

runtime/vm/class_finalizer_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/assert.h"
 #include "vm/class_finalizer.h"
 #include "vm/symbols.h"
 #include "vm/unit_test.h"
 
 namespace dart {
@@ skipping 30 matching lines @@
   pending_classes.Add(*classes_2[1]);
   classes_2.Add(&Class::ZoneHandle(CreateTestClass("Alfa")));
   pending_classes.Add(*classes_2[2]);
   EXPECT(ClassFinalizer::FinalizePendingClasses());
   for (int i = 0; i < classes_1.length(); i++) {
     EXPECT(classes_1[i]->is_finalized());
   }
   for (int i = 0; i < classes_2.length(); i++) {
     EXPECT(classes_2[i]->is_finalized());
   }
+  EXPECT(ClassFinalizer::AllClassesFinalized());
   EXPECT(ClassFinalizer::FinalizePendingClasses());
 }
 
 
 TEST_CASE(ClassFinalize_Cycles) {
   Isolate* isolate = Isolate::Current();
   ObjectStore* object_store = isolate->object_store();
   const GrowableObjectArray& pending_classes =
       GrowableObjectArray::Handle(isolate, object_store->pending_classes());
   GrowableArray<const Class*> classes;
@@ skipping 35 matching lines @@
                            Scanner::kDummyTokenIndex));
   const TypeArguments& type_arguments = TypeArguments::Handle();
   rhb.set_super_type(Type::Handle(
       Type::New(Object::Handle(unresolved.raw()),
                 type_arguments,
                 Scanner::kDummyTokenIndex)));
   EXPECT(ClassFinalizer::FinalizePendingClasses());
 }
 
 }  // namespace dart