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

ui/base/test/user_interactive_test_case.h

+// 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.
+
+#ifndef UI_BASE_TEST_USER_INTERACTIVE_TEST_CASE_H_
+#define UI_BASE_TEST_USER_INTERACTIVE_TEST_CASE_H_
+
+namespace test {
+
+// Foregrounds the test process and spins a run loop to run a test case as
+// interactive UI. Call this at the end of test fixtures that are used to
+// invoke UI (designed for manual testing of hard-to-summon dialogs). This
+// function does not return.
+void RunTestInteractively();
+
+}  // namespace test
+
+#endif  // UI_BASE_TEST_USER_INTERACTIVE_TEST_CASE_H_