[tab_container] Consolidate tabStrip into tab_container.

ios/clean/chrome/browser/ui/tab/tab_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.
 
 // ======                        New Architecture                         =====
 // =         This code is only used in the new iOS Chrome architecture.       =
 // ============================================================================
 
 #import "ios/clean/chrome/browser/ui/tab/tab_coordinator.h"
 
 #include <memory>
 
 #include "base/mac/foundation_util.h"
 #include "base/memory/ptr_util.h"
 #import "ios/clean/chrome/browser/browser_coordinator+internal.h"
+#import "ios/clean/chrome/browser/ui/actions/tab_grid_actions.h"
 #import "ios/clean/chrome/browser/ui/animators/zoom_transition_animator.h"
 #import "ios/clean/chrome/browser/ui/tab/tab_container_view_controller.h"
 #import "ios/clean/chrome/browser/ui/toolbar/toolbar_coordinator.h"
 #import "ios/clean/chrome/browser/ui/web_contents/web_coordinator.h"
 #import "ios/shared/chrome/browser/coordinator_context/coordinator_context.h"
 #import "ios/web/public/web_state/web_state_observer_bridge.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
@@ skipping 36 matching lines @@
   _webStateObserver = base::MakeUnique<web::WebStateObserverBridge>(
       self.webState, toolbarCoordinator);
   // Unset the base view controller, so |toolbarCoordinator| doesn't present
   // its view controller.
   toolbarCoordinator.context.baseViewController = nil;
   [toolbarCoordinator start];
 
   self.viewController.toolbarViewController = toolbarCoordinator.viewController;
   self.viewController.contentViewController = webCoordinator.viewController;
 
+  // PLACEHOLDER: Replace this placeholder with an actual tab strip view
+  // controller.
+  UIButton* button = [UIButton buttonWithType:UIButtonTypeCustom];
+  [button addTarget:nil
+                action:@selector(showTabGrid:)
+      forControlEvents:UIControlEventTouchUpInside];
+  [button setTitle:@"Tab grid" forState:UIControlStateNormal];
+  button.frame = CGRectMake(10, 10, 100, 100);
+
+  UIViewController* tabStripViewController = [[UIViewController alloc] init];
+  tabStripViewController.view.backgroundColor = [UIColor blackColor];
+  [tabStripViewController.view addSubview:button];
+  self.viewController.tabStripViewController = tabStripViewController;
+
   [self.context.baseViewController presentViewController:self.viewController
                                                 animated:self.context.animated
                                               completion:nil];
 }
 
 - (void)stop {
   [self.viewController.presentingViewController
       dismissViewControllerAnimated:self.context.animated
                          completion:nil];
   _webStateObserver.reset();
 }
 
 - (BOOL)canAddOverlayCoordinator:(BrowserCoordinator*)overlayCoordinator {
   // This coordinator will always accept overlay coordinators.
   return YES;
 }
 
 #pragma mark - Experiment support
 
 // Create and return a new view controller for use as a tab container;
 // experimental configurations determine which subclass of
 // TabContainerViewController to return.
 - (TabContainerViewController*)newTabContainer {
   if (kUseBottomToolbar) {
     return [[BottomToolbarTabViewController alloc] init];
   }
-  return [[TopToolbarTabViewController alloc] init];
+  return [[TabContainerViewController alloc] init];
 }
 
 #pragma mark - UIViewControllerTransitioningDelegate
 
 - (id<UIViewControllerAnimatedTransitioning>)
 animationControllerForPresentedController:(UIViewController*)presented
                      presentingController:(UIViewController*)presenting
                          sourceController:(UIViewController*)source {
   ZoomTransitionAnimator* animator = [[ZoomTransitionAnimator alloc] init];
   animator.presenting = YES;
   animator.presentationKey = self.presentationKey;
   [animator selectDelegate:@[ source, presenting ]];
   return animator;
 }
 
 - (id<UIViewControllerAnimatedTransitioning>)
 animationControllerForDismissedController:(UIViewController*)dismissed {
   ZoomTransitionAnimator* animator = [[ZoomTransitionAnimator alloc] init];
   animator.presenting = NO;
   animator.presentationKey = self.presentationKey;
   [animator selectDelegate:@[ dismissed.presentingViewController ]];
   return animator;
 }
 
 @end