Updated tab history classes to use NavigationItemLists.

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

Index: ios/chrome/browser/ui/history/tab_history_cell.h
diff --git a/ios/chrome/browser/ui/history/tab_history_cell.h b/ios/chrome/browser/ui/history/tab_history_cell.h
index 745a9d5d4230e0b66ed77924fc9b2671aedd9ca4..590e037f71f02848e8e8ad521931a9b491c3ceae 100644
--- a/ios/chrome/browser/ui/history/tab_history_cell.h
+++ b/ios/chrome/browser/ui/history/tab_history_cell.h
@@ -7,18 +7,20 @@
 
 #import <UIKit/UIKit.h>
 
-@class CRWSessionEntry;
+namespace web {
+class NavigationItem;
+}
 
 // Table cell used in TabHistoryViewController.
 @interface TabHistoryCell : UICollectionViewCell
-@property(strong, nonatomic) CRWSessionEntry* entry;
-@property(weak, nonatomic, readonly) UILabel* titleLabel;
+@property(assign, nonatomic) const web::NavigationItem* item;
+@property(strong, nonatomic, readonly) UILabel* titleLabel;
 @end
 
 // Header for a section of TabHistoryCells.
 @interface TabHistorySectionHeader : UICollectionReusableView
-@property(weak, nonatomic, readonly) UIImageView* iconView;
-@property(weak, nonatomic, readonly) UIView* lineView;
+@property(strong, nonatomic, readonly) UIImageView* iconView;
+@property(strong, nonatomic, readonly) UIView* lineView;
 @end
 
 // Footer for a section of TabHistoryCells.