Generate dynamic type errors according to spec.

tests/language/src/TypeVariableBoundsTest.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.
 
 // Test of parameterized factory methods.
 
 class Foo<T extends num> {
   Foo();
 
   factory XFoo.bad() { return null; } /// 00: compile-time error
 
   factory IFoo.good() { return null; }
 
   factory IFoo() { return null; }
 }
 
 interface IFoo<T extends num> default Foo<T extends num> {
 }
 
 // String is not assignable to num.
 class Baz
-    extends Foo<String> /// 01: static type error
+    extends Foo<String> /// 01: dynamic type error
 {}
 
 class Biz extends Foo<int> {}
 
 Foo<int> fi;
 
 // String is not assignable to num.
 Foo
     <String> /// 02: static type error
   fs;
 
 class Box<T> {
 
   // Box.T is not assignable to num.
   Foo<T> t; /// 03: static type error
 
   makeFoo() {
     // Box.T is not assignable to num.
     return new Foo<T>(); /// 04: static type error
   }
 }
 
 main() {
   // String is not assignable to num.
-  var v1 = new Foo<String>(); /// 05: static type error
+  var v1 = new Foo<String>(); /// 05: dynamic type error
 
   // String is not assignable to num.
   Foo<String> v2 = null; /// 06: static type error
 
   new Baz();
   new Biz();
 
   fi = new Foo();
   fs = new Foo();
 
   new Box().makeFoo();
   new Box<int>().makeFoo();
   new Box<String>().makeFoo();
 
   // Fisk does not exist.
   new Box<Fisk>(); /// 07: compile-time error
 
   // Too many type arguments.
   new Box<Object, Object>(); /// 08: compile-time error
 
   // Fisk does not exist.
-  Box<Fisk> box = null; /// 09: dynamic type error
+  Box<Fisk> box = null; /// 09: static type error
 
   // Too many type arguments.
-  Box<Object, Object> box = null; /// 10: dynamic type error
+  Box<Object, Object> box = null; /// 10: static type error
 }