[ios] RootCoordinator and view controller.

ios/showcase/root/sc_root_coordinator.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 "ios/showcase/root/sc_root_coordinator.h"
+
+#import "ios/clean/chrome/browser/ui/root/root_container_view_controller.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@implementation SCRootCoordinator
+
+@synthesize baseViewController;
+
+- (void)start {
+  RootContainerViewController* viewController =
+      [[RootContainerViewController alloc] init];
+  UIViewController* contentViewController = [[UIViewController alloc] init];
+  contentViewController.view.backgroundColor = [UIColor greenColor];
+  viewController.contentViewController = contentViewController;
+  viewController.title = @"Root container";
+  [self.baseViewController pushViewController:viewController animated:YES];
+}
+
+@end