[ios] TabCollectionItem

ios/clean/chrome/browser/ui/tab_strip/tab_strip_coordinator.mm

 // Copyright 2017 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/clean/chrome/browser/ui/tab_strip/tab_strip_coordinator.h"
 
 #import "ios/chrome/browser/web_state_list/web_state_list.h"
 #import "ios/clean/chrome/browser/ui/commands/tab_strip_commands.h"
 #import "ios/clean/chrome/browser/ui/tab_collection/tab_collection_mediator.h"
 #import "ios/clean/chrome/browser/ui/tab_strip/tab_strip_view_controller.h"
@@ skipping 27 matching lines @@
   CommandDispatcher* dispatcher = self.browser->dispatcher();
   [dispatcher startDispatchingToTarget:self
                            forSelector:@selector(showTabStripTabAtIndex:)];
   [dispatcher startDispatchingToTarget:self
                            forSelector:@selector(closeTabStripTabAtIndex:)];
 
   self.viewController = [[TabStripViewController alloc] init];
   self.mediator = [[TabCollectionMediator alloc] init];
   self.mediator.webStateList = &self.webStateList;
   self.mediator.consumer = self.viewController;
-  self.viewController.dataSource = self.mediator;
   self.viewController.dispatcher = static_cast<id>(self.browser->dispatcher());
 
   [super start];
 }
 
 - (void)stop {
   [super stop];
   [self.mediator disconnect];
   [self.browser->dispatcher() stopDispatchingToTarget:self];
 }
 
 #pragma mark - TabStripCommands
 
 - (void)showTabStripTabAtIndex:(int)index {
   self.webStateList.ActivateWebStateAt(index);
 }
 
 - (void)closeTabStripTabAtIndex:(int)index {
   self.webStateList.CloseWebStateAt(index);
 }
 
 @end