Added back helper file accidentally deleted during test block 219 migration.

tests/lib/mirrors/declarations_type_test.dart

Index: tests/lib/mirrors/declarations_type_test.dart
diff --git a/tests/lib/mirrors/declarations_type_test.dart b/tests/lib/mirrors/declarations_type_test.dart
deleted file mode 100644
index 974f91b765688cc9fe7538aa2ec60db862c6181e..0000000000000000000000000000000000000000
--- a/tests/lib/mirrors/declarations_type_test.dart
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright (c) 2014, 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.
-
-// Regression test for Issue 14972.
-
-library test.declarations_type;
-
-@MirrorsUsed(targets: "test.declarations_type")
-import 'dart:mirrors';
-import 'package:expect/expect.dart';
-
-class C {}
-
-main() {
-  var classDeclarations = reflectClass(C).declarations;
-  Expect.isTrue(classDeclarations is Map<Symbol, DeclarationMirror>);
-  Expect.isTrue(classDeclarations.values is Iterable<DeclarationMirror>);
-  Expect.isTrue(classDeclarations.values.where((x) => true)
-      is Iterable<DeclarationMirror>);
-  Expect.isFalse(classDeclarations is Map<Symbol, MethodMirror>);
-  Expect.isFalse(classDeclarations.values is Iterable<MethodMirror>);
-  Expect.isFalse(
-      classDeclarations.values.where((x) => true) is Iterable<MethodMirror>);
-
-  var libraryDeclarations =
-      (reflectClass(C).owner as LibraryMirror).declarations;
-  Expect.isTrue(libraryDeclarations is Map<Symbol, DeclarationMirror>);
-  Expect.isTrue(libraryDeclarations.values is Iterable<DeclarationMirror>);
-  Expect.isTrue(libraryDeclarations.values.where((x) => true)
-      is Iterable<DeclarationMirror>);
-  Expect.isFalse(libraryDeclarations is Map<Symbol, ClassMirror>);
-  Expect.isFalse(libraryDeclarations.values is Iterable<ClassMirror>);
-  Expect.isFalse(
-      libraryDeclarations.values.where((x) => true) is Iterable<ClassMirror>);
-}