Revert of Updated tab history classes to use NavigationItemLists.

ios/chrome/browser/ui/history/tab_history_view_controller.h

 // Copyright 2014 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.
 
 #ifndef IOS_CHROME_BROWSER_UI_HISTORY_TAB_HISTORY_VIEW_CONTROLLER_H_
 #define IOS_CHROME_BROWSER_UI_HISTORY_TAB_HISTORY_VIEW_CONTROLLER_H_
 
 #import <UIKit/UIKit.h>
 
-#include "ios/web/public/navigation_item_list.h"
-
-// View controller for displaying a list of NavigationItems in a table.
+// View controller for displaying a list of CRWSessionEntry objects in a table.
 @interface TabHistoryViewController : UICollectionViewController
 
-// Designated initializer that takes a NavigationItemList.
-- (instancetype)initWithItems:(const web::NavigationItemList&)items
-    NS_DESIGNATED_INITIALIZER;
-
-// TabHistoryViewControllers must be initialized with |-initWithItems:|.
-- (instancetype)initWithCoder:(NSCoder*)aDecoder NS_UNAVAILABLE;
-- (instancetype)initWithCollectionViewLayout:(UICollectionViewLayout*)layout
-    NS_UNAVAILABLE;
-- (instancetype)initWithNibName:(NSString*)nibNameOrNil
-                         bundle:(NSBundle*)nibBundleOrNil NS_UNAVAILABLE;
+// TODO(crbug.com/546355): Convert this class to use an array of
+//    NavigationEntries.
+@property(nonatomic, strong) NSArray* sessionEntries;
 
 // Returns the optimal height needed to display the session entries.
 // The height returned is usually less than the |suggestedHeight| unless
 // the last row of the table puts the height just over the |suggestedHeight|.
 // If the session entries table is taller than the |suggestedHeight| by at least
 // one row, the last visible session entry will be shown partially so the user
 // can tell that the table is scrollable.
 - (CGFloat)optimalHeight:(CGFloat)suggestedHeight;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_HISTORY_TAB_HISTORY_VIEW_CONTROLLER_H_