[ios] RootCoordinator and view controller.

ios/showcase/root/sc_root_egtest.mm

+// Copyright 2017 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.
+
+#import <EarlGrey/EarlGrey.h>
+
+#import "ios/showcase/test/showcase_eg_utils.h"
+#import "ios/showcase/test/showcase_test_case.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+// Tests for the root container view controller.
+@interface SCRootTestCase : ShowcaseTestCase
+@end
+
+@implementation SCRootTestCase
+
+// Tests launching RootContainerViewController.
+- (void)testLaunch {
+  showcase_utils::Open(@"RootContainerViewController");
+  showcase_utils::Close();
+}
+
+@end