Upstream ios/showcase source code.

ios/showcase/settings/settings_coordinator.mm

Index: ios/showcase/settings/settings_coordinator.mm
diff --git a/ios/showcase/settings/settings_coordinator.mm b/ios/showcase/settings/settings_coordinator.mm
new file mode 100644
index 0000000000000000000000000000000000000000..8e28d4476c4795b1e75b16920092712896b87c81
--- /dev/null
+++ b/ios/showcase/settings/settings_coordinator.mm
@@ -0,0 +1,22 @@
+// 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.
+
+#import "ios/showcase/settings/settings_coordinator.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@implementation SettingsCoordinator
+
+@synthesize baseViewController;
+
+- (void)start {
+  UIViewController* settings = [[UIViewController alloc] init];
+  settings.title = @"Settings";
+  settings.view.backgroundColor = [UIColor grayColor];
+  [self.baseViewController pushViewController:settings animated:YES];
+}
+
+@end