Add token index position to classes and types for more accurate error reporting.

runtime/vm/class_finalizer_test.cc

Index: runtime/vm/class_finalizer_test.cc
===================================================================
--- runtime/vm/class_finalizer_test.cc	(revision 3925)
+++ runtime/vm/class_finalizer_test.cc	(working copy)
@@ -13,7 +13,8 @@
   const Array& empty_array = Array::Handle(Array::Empty());
   const String& class_name = String::Handle(String::NewSymbol(name));
   const Script& script = Script::Handle();
-  const Class& cls = Class::Handle(Class::New(class_name, script));
+  const intptr_t kPos = 1;  // Dummy token index in non-existing source.
+  const Class& cls = Class::Handle(Class::New(class_name, script, kPos));
   cls.set_interfaces(empty_array);
   cls.SetFunctions(empty_array);
   cls.SetFields(empty_array);
@@ -72,11 +73,12 @@
   lib.AddClass(rhb);
   lib.AddClass(sbb);
   const String& superclass_name = String::Handle(sbb.Name());
+  const intptr_t kPos = 1;  // Dummy token index in non-existing source.
   const UnresolvedClass& unresolved = UnresolvedClass::Handle(
-      UnresolvedClass::New(0, LibraryPrefix::Handle(), superclass_name));
+      UnresolvedClass::New(LibraryPrefix::Handle(), superclass_name, kPos));
   const TypeArguments& type_arguments = TypeArguments::Handle();
   rhb.set_super_type(Type::Handle(Type::New(
-      Object::Handle(unresolved.raw()), type_arguments)));
+      Object::Handle(unresolved.raw()), type_arguments, kPos)));
   ClassFinalizer::AddPendingClasses(classes);
   EXPECT(ClassFinalizer::FinalizePendingClasses());
 }