Views: Add two disabled tests for invoking the CC unmask prompt dialog.

ui/base/test/user_interactive_test_case_mac.mm

+// Copyright 2016 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.
+
+#include "ui/base/test/user_interactive_test_case.h"
+
+#import <Cocoa/Cocoa.h>
+
+#include "base/run_loop.h"
+
+namespace test {
+
+void RunTestInteractively() {
+  [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
+  [NSApp activateIgnoringOtherApps:YES];
+  base::RunLoop().Run();
+}
+
+}  // namespace test