Rename BadNumberFormatException -> FormatException.

utils/tests/pub/pubspec_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.
 
 #library('pubspec_test');
 
 #import('../../../lib/unittest/unittest.dart');
 #import('../../pub/pubspec.dart');
 #import('../../pub/source.dart');
 #import('../../pub/source_registry.dart');
@@ skipping 27 matching lines @@
         expect(foo.name, equals('foo'));
         expect(foo.constraint.allows(new Version(1, 2, 3)));
         expect(foo.constraint.allows(new Version(1, 2, 5)));
         expect(!foo.constraint.allows(new Version(3, 4, 5)));
       });
 
       test("throws if the description isn't valid", () {
         var sources = new SourceRegistry();
         sources.register(new MockSource());
 
-        throwsBadFormat(() {
+        expect(() {
         new Pubspec.parse('''
 dependencies:
   foo:
     mock: bad
 ''', sources);
-        });
+        }, throwsFormatException);
       });
 
       test("allows comment-only files", () {
         var sources = new SourceRegistry();
         sources.register(new MockSource());
 
         var pubspec = new Pubspec.parse('''
 # No external dependencies yet
 # Including for completeness
 # ...and hoping the spec expands to include details about author, version, etc
 # See http://www.dartlang.org/docs/pub-package-manager/ for details
 ''', sources);
         expect(pubspec.version, equals(Version.none));
         expect(pubspec.dependencies, isEmpty);
       });
     });
   });
 }
-
-throwsBadFormat(function) {
-  expect(function, throwsA((e) => e is FormatException));
-}