[ObjC ARC] Converts ios/chrome/browser/ui/tools_menu:tools_menu to ARC.

ios/chrome/browser/ui/tools_menu/tools_menu_view_item.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_TOOLS_MENU_TOOLS_MENU_VIEW_ITEM_H_
 #define IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_VIEW_ITEM_H_
 
 #import <UIKit/UIKit.h>
 
 @class ToolsMenuViewCell;
 
 @interface ToolsMenuViewItem : NSObject
 @property(nonatomic, copy) NSString* accessibilityIdentifier;
 @property(nonatomic, copy) NSString* title;
 @property(nonatomic, assign) NSInteger tag;
 @property(nonatomic, assign) BOOL active;
-@property(nonatomic, assign) ToolsMenuViewCell* tableViewCell;
+@property(nonatomic, weak) ToolsMenuViewCell* tableViewCell;
 
 + (NSString*)cellID;
 + (Class)cellClass;
 
 + (instancetype)menuItemWithTitle:(NSString*)title
           accessibilityIdentifier:(NSString*)accessibilityIdentifier
                           command:(int)commandID;
 @end
 
 @interface ToolsMenuViewCell : UICollectionViewCell
-@property(nonatomic, retain) UILabel* title;
+@property(nonatomic, strong) UILabel* title;
 @property(nonatomic, readonly) CGFloat horizontalMargin;
 
 - (void)configureForMenuItem:(ToolsMenuViewItem*)item;
 - (void)initializeTitleView;
 - (void)initializeViews;
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_VIEW_ITEM_H_