[Clean Skeleton] Migrate code to clean/

ios/chrome/browser/ui/tab_grid/tab_grid_view_controller.mm

Index: ios/chrome/browser/ui/tab_grid/tab_grid_view_controller.mm
diff --git a/ios/chrome/browser/ui/tab_grid/tab_grid_view_controller.mm b/ios/chrome/browser/ui/tab_grid/tab_grid_view_controller.mm
deleted file mode 100644
index 202dff03c261a00bf352db17af2906dae561fd06..0000000000000000000000000000000000000000
--- a/ios/chrome/browser/ui/tab_grid/tab_grid_view_controller.mm
+++ /dev/null
@@ -1,155 +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_grid/tab_grid_view_controller.h"
-
-#include "base/mac/foundation_util.h"
-#import "ios/chrome/browser/ui/actions/settings_actions.h"
-#import "ios/chrome/browser/ui/actions/tab_grid_actions.h"
-#import "ios/chrome/browser/ui/tab_grid/tab_grid_tab_cell.h"
-#import "ios/chrome/browser/ui/commands/settings_commands.h"
-#import "ios/chrome/browser/ui/commands/tab_commands.h"
-#import "ios/chrome/browser/ui/commands/tab_grid_commands.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-namespace {
-NSString* const kTabGridCellIdentifier = @"tabGridCell";
-const CGFloat kSpace = 20;
-const CGFloat kTabSize = 150;
-}
-
-@interface TabGridViewController ()<SettingsActions,
-                                    TabGridActions,
-                                    UICollectionViewDataSource,
-                                    UICollectionViewDelegate>
-@property(nonatomic, weak) UICollectionView* grid;
-@end
-
-@implementation TabGridViewController
-
-@synthesize dataSource = _dataSource;
-@synthesize settingsCommandHandler = _settingsCommandHandler;
-@synthesize tabGridCommandHandler = _tabGridCommandHandler;
-@synthesize tabCommandHandler = _tabCommandHandler;
-@synthesize grid = _grid;
-
-- (void)viewDidLoad {
-  // Placeholder dark grey stripe at the top of the view.
-  UIView* stripe = [[UIView alloc] initWithFrame:CGRectZero];
-  stripe.translatesAutoresizingMaskIntoConstraints = NO;
-  stripe.backgroundColor = [UIColor darkGrayColor];
-  [self.view addSubview:stripe];
-
-  // Placeholder settings button at in the stripe.
-  UIButton* settings = [UIButton buttonWithType:UIButtonTypeSystem];
-  settings.translatesAutoresizingMaskIntoConstraints = NO;
-  [settings setTitle:@"⚙" forState:UIControlStateNormal];
-  settings.titleLabel.font = [UIFont systemFontOfSize:24.0];
-  [settings addTarget:nil
-                action:@selector(showSettings:)
-      forControlEvents:UIControlEventTouchUpInside];
-  [stripe addSubview:settings];
-
-  [NSLayoutConstraint activateConstraints:@[
-    [stripe.heightAnchor constraintEqualToConstant:64.0],
-    [stripe.widthAnchor constraintEqualToAnchor:self.view.widthAnchor],
-    [stripe.topAnchor constraintEqualToAnchor:self.view.topAnchor],
-    [stripe.centerXAnchor constraintEqualToAnchor:self.view.centerXAnchor],
-    [settings.leadingAnchor
-        constraintEqualToAnchor:stripe.layoutMarginsGuide.leadingAnchor],
-    [settings.centerYAnchor constraintEqualToAnchor:stripe.centerYAnchor]
-  ]];
-
-  UICollectionViewFlowLayout* layout =
-      [[UICollectionViewFlowLayout alloc] init];
-  layout.minimumLineSpacing = kSpace;
-  layout.minimumInteritemSpacing = kSpace;
-  layout.sectionInset = UIEdgeInsetsMake(kSpace, kSpace, kSpace, kSpace);
-  layout.itemSize = CGSizeMake(kTabSize, kTabSize);
-
-  UICollectionView* grid = [[UICollectionView alloc] initWithFrame:CGRectZero
-                                              collectionViewLayout:layout];
-  grid.translatesAutoresizingMaskIntoConstraints = NO;
-  grid.backgroundColor = [UIColor blackColor];
-
-  [self.view addSubview:grid];
-  self.grid = grid;
-  self.grid.dataSource = self;
-  self.grid.delegate = self;
-  [self.grid registerClass:[TabGridTabCell class]
-      forCellWithReuseIdentifier:kTabGridCellIdentifier];
-
-  [NSLayoutConstraint activateConstraints:@[
-    [self.grid.topAnchor constraintEqualToAnchor:stripe.bottomAnchor],
-    [self.grid.bottomAnchor constraintEqualToAnchor:self.view.bottomAnchor],
-    [self.grid.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor],
-    [self.grid.trailingAnchor constraintEqualToAnchor:self.view.trailingAnchor],
-  ]];
-}
-
-- (void)viewWillAppear:(BOOL)animated {
-  [self.grid reloadData];
-}
-
-#pragma mark - UICollectionViewDataSource methods
-
-- (NSInteger)numberOfSectionsInCollectionView:
-    (UICollectionView*)collectionView {
-  return 1;
-}
-
-- (NSInteger)collectionView:(UICollectionView*)collectionView
-     numberOfItemsInSection:(NSInteger)section {
-  return [self.dataSource numberOfTabsInTabGrid];
-}
-
-- (UICollectionViewCell*)collectionView:(UICollectionView*)collectionView
-                 cellForItemAtIndexPath:(nonnull NSIndexPath*)indexPath {
-  TabGridTabCell* cell =
-      base::mac::ObjCCastStrict<TabGridTabCell>([collectionView
-          dequeueReusableCellWithReuseIdentifier:kTabGridCellIdentifier
-                                    forIndexPath:indexPath]);
-  cell.contentView.backgroundColor = [UIColor purpleColor];
-  cell.selected = YES;
-  cell.label.text = [self.dataSource titleAtIndex:indexPath.item];
-  return cell;
-}
-
-#pragma mark - UICollectionViewDelegate methods
-
-- (void)collectionView:(UICollectionView*)collectionView
-    didSelectItemAtIndexPath:(NSIndexPath*)indexPath {
-  [self.tabCommandHandler showTabAtIndexPath:indexPath];
-}
-
-#pragma mark - ZoomTransitionDelegate methods
-
-- (CGRect)rectForZoomWithKey:(NSObject*)key inView:(UIView*)view {
-  NSIndexPath* cellPath = base::mac::ObjCCastStrict<NSIndexPath>(key);
-  if (!key)
-    return CGRectNull;
-  UICollectionViewCell* cell = [self.grid cellForItemAtIndexPath:cellPath];
-  return [view convertRect:cell.bounds fromView:cell];
-}
-
-#pragma mark - SettingsActions
-
-- (void)showSettings:(id)sender {
-  [self.settingsCommandHandler showSettings];
-}
-
-#pragma mark - TabGridActions
-
-- (void)showTabGrid:(id)sender {
-  [self.tabGridCommandHandler showTabGrid];
-}
-
-@end