Enable type inference when using mirrors.

tests/compiler/dart2js_extra/mirror_type_inference_function_test.dart

Index: tests/compiler/dart2js_extra/mirror_type_inference_function_test.dart
diff --git a/tests/compiler/dart2js_extra/mirror_type_inference_function_test.dart b/tests/compiler/dart2js_extra/mirror_type_inference_function_test.dart
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index 0000000000000000000000000000000000000000..a6ed031f9122688109dfc38ad102a0aeb9ba3d93
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+++ b/tests/compiler/dart2js_extra/mirror_type_inference_function_test.dart
@@ -0,0 +1,20 @@
+// Copyright (c) 2013, 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 type inference sees the call to `fisk` from the mirror system
+// and not infers the argument to be an integer.
+library test;
+
+@MirrorsUsed(targets: 'fisk', override: '*')
+import 'dart:mirrors';
+
+import 'package:expect/expect.dart';
+
+bool fisk(a) => a is int;
+
+main() {
+  Expect.isTrue(fisk(1));
+  var lm = currentMirrorSystem().findLibrary(const Symbol('test')).single;
+  Expect.isFalse(lm.invoke(const Symbol('fisk'), ['hest']).reflectee);
+}