Support new malformed types semantics.

tests/language/type_parameter_test.dart

 // 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.
 
 import "package:expect/expect.dart";
 
 class A<T> {
   Function closure;
   A._(this.closure);
 
   factory A() {
     return new A._(() => new Set<T>());
   }
 
   A.bar() {
     closure = () => new Set<T>();
   }
 
   static
-  T /// 01: static type warning, dynamic type error
+  T /// 01: static type warning
   staticMethod(
-  T /// 02: static type warning, dynamic type error
+  T /// 02: static type warning
   a) {
     final
-    T /// 03: static type warning, dynamic type error
+    T /// 03: static type warning
     a = "not_null";
     print(a);
     return a;
   }
 
   static final
-  T /// 04: static type warning, dynamic type error
+  T /// 04: static type warning
   staticField = "not_null";
 
   // Assigning null to a malformed type is not a dynamic error.
   static
   T staticMethod2(T a) {
     final T a = null;
     print(a);
     return a;
   }
 
@@ skipping 14 matching lines @@
   s = ((new A<int>.bar()).closure)();
   Expect.isTrue(s is Set<int>);
   Expect.isFalse(s is Set<double>);
 
   A.staticMethod("not_null");
   print(A.staticField);
 
   A.staticMethod2(null);
   print(A.staticField2);
 }