Annotates some more tests for static type warnings

tests/language/src/InterfaceFactoryTest.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 //
 // Test that the two major variations of interface factories work.
 
 // Variant 1.  The factory class implements the interface and provides
 // a default implementation of the interface.
 
 interface Interface1 default DefaultImplementation {
-  Interface1(var secret);
+  // first parameter type 'var' not a subtype of 'int' in default implementation
+  Interface1(var secret); /// static type warning
   Interface1.named();
 
   GetSecret();
 }
 
 class DefaultImplementation implements Interface1 {
   int _secret;
 
   DefaultImplementation(int this._secret) {}
   DefaultImplementation.named() : this._secret = 11 {}
@@ skipping 37 matching lines @@
   static testMain() {
     Expect.equals("cobracobra", new Interface2("cobra").GetSecret());
     Expect.equals("NamedConstructor", new Interface2.named().GetSecret());
   }
 }
 
 main() {
   DefaultImplementation.testMain();
   FactoryProvider.testMain();
 }