[Clean Skeleton] Migrate code to clean/

ios/chrome/browser/ui/tab/tab_coordinator.mm

Index: ios/chrome/browser/ui/tab/tab_coordinator.mm
diff --git a/ios/chrome/browser/ui/tab/tab_coordinator.mm b/ios/chrome/browser/ui/tab/tab_coordinator.mm
deleted file mode 100644
index 59da7ef5a0fe5b6dbf1e895e46e90d7b572ac3e3..0000000000000000000000000000000000000000
--- a/ios/chrome/browser/ui/tab/tab_coordinator.mm
+++ /dev/null
@@ -1,120 +0,0 @@
-// 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/chrome/browser/ui/tab/tab_coordinator.h"
-
-#include <memory>
-
-#include "base/mac/foundation_util.h"
-#include "base/memory/ptr_util.h"
-#import "ios/chrome/browser/browser_coordinator+internal.h"
-#import "ios/chrome/browser/ui/animators/zoom_transition_animator.h"
-#import "ios/chrome/browser/ui/tab/tab_container_view_controller.h"
-#import "ios/chrome/browser/ui/toolbar/toolbar_coordinator.h"
-#import "ios/chrome/browser/ui/web_contents/web_coordinator.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
-
-namespace {
-// Placeholder "experiment" flag. Change this to YES to have the toolbar at the
-// bottom.
-const BOOL kUseBottomToolbar = NO;
-}  // namespace
-
-@interface TabCoordinator ()<UIViewControllerTransitioningDelegate>
-@property(nonatomic, strong) TabContainerViewController* viewController;
-@end
-
-@implementation TabCoordinator {
-  std::unique_ptr<web::WebStateObserverBridge> _webStateObserver;
-}
-
-@synthesize webState = _webState;
-@synthesize presentationKey = _presentationKey;
-@synthesize viewController = _viewController;
-
-- (void)start {
-  self.viewController = [self newTabContainer];
-  self.viewController.transitioningDelegate = self;
-  self.viewController.modalPresentationStyle = UIModalPresentationCustom;
-
-  WebCoordinator* webCoordinator = [[WebCoordinator alloc] init];
-  webCoordinator.webState = self.webState;
-  [self addChildCoordinator:webCoordinator];
-  // Unset the root view controller, so |webCoordinator| doesn't present its
-  // view controller.
-  webCoordinator.rootViewController = nil;
-  [webCoordinator start];
-
-  ToolbarCoordinator* toolbarCoordinator = [[ToolbarCoordinator alloc] init];
-  [self addChildCoordinator:toolbarCoordinator];
-  // TODO: Instead of this, let WebMediator maintain a set of webStateObservers
-  // and just provide -addObserver and -stopObserving methods.
-  _webStateObserver = base::MakeUnique<web::WebStateObserverBridge>(
-      self.webState, toolbarCoordinator);
-  // Unset the .base view controller, so |toolbarCoordinator| doesn't present
-  // its view controller.
-  toolbarCoordinator.rootViewController = nil;
-  [toolbarCoordinator start];
-
-  self.viewController.toolbarViewController = toolbarCoordinator.viewController;
-  self.viewController.contentViewController = webCoordinator.viewController;
-
-  [self.rootViewController presentViewController:self.viewController
-                                        animated:YES
-                                      completion:nil];
-}
-
-- (void)stop {
-  [self.viewController dismissViewControllerAnimated:YES 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];
-}
-
-#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