Make it possible to run gtests on iOS.

base/test/test_listener_ios.h

Index: base/test/test_listener_ios.h
diff --git a/base/test/test_listener_ios.h b/base/test/test_listener_ios.h
new file mode 100644
index 0000000000000000000000000000000000000000..c312250065d5f674b68fc3ad893908d675938128
--- /dev/null
+++ b/base/test/test_listener_ios.h
@@ -0,0 +1,17 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_TEST_TEST_LISTENER_IOS_H_
+#define BASE_TEST_TEST_LISTENER_IOS_H_
+
+namespace base {
+namespace test_listener_ios {
+
+// Register an IOSRunLoopListener.
+void RegisterTestEndListener();
+
+}  // namespace test_listener_ios
+}  // namespace base
+
+#endif  // BASE_TEST_TEST_LISTENER_IOS_H_