[tab_container] Remove tab_strip container

ios/showcase/tab_strip/sc_tab_strip_coordinator.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.
-
-#import "ios/showcase/tab_strip/sc_tab_strip_coordinator.h"
-
-#import "ios/clean/chrome/browser/ui/actions/tab_strip_actions.h"
-#import "ios/clean/chrome/browser/ui/tab_strip/tab_strip_container_view_controller.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-@interface SCTabStripCoordinator ()
-@property(nonatomic, strong) TabStripContainerViewController* viewController;
-@end
-
-@implementation SCTabStripCoordinator
-@synthesize baseViewController = _baseViewController;
-@synthesize viewController = _viewController;
-
-- (void)start {
-  UIViewController* blackViewController = [[UIViewController alloc] init];
-  blackViewController.view.backgroundColor = [UIColor blackColor];
-
-  UIViewController* greenViewController =
-      [self viewControllerWithButtonTitle:@"toggleStrip"
-                                   action:@selector(hideTabStrip:)];
-  greenViewController.view.backgroundColor = [UIColor greenColor];
-
-  self.viewController = [[TabStripContainerViewController alloc] init];
-  self.viewController.title = @"Tab strip container";
-  self.viewController.tabStripViewController = blackViewController;
-  self.viewController.contentViewController = greenViewController;
-  self.baseViewController.navigationBar.translucent = NO;
-  [self.baseViewController pushViewController:self.viewController animated:YES];
-}
-
-- (UIViewController*)viewControllerWithButtonTitle:(NSString*)title
-                                            action:(SEL)action {
-  UIViewController* viewController = [[UIViewController alloc] init];
-  UIButton* button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
-  [button setFrame:CGRectMake(10, 10, 80, 50)];
-  [button setTitle:title forState:UIControlStateNormal];
-  [viewController.view addSubview:button];
-  [button addTarget:nil
-                action:action
-      forControlEvents:UIControlEventTouchUpInside];
-  return viewController;
-}
-
-@end