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

ios/chrome/browser/ui/ntp/new_tab_page_bar_item.h

 // Copyright 2012 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_NTP_NEW_TAB_PAGE_BAR_ITEM_H_
 #define IOS_CHROME_BROWSER_UI_NTP_NEW_TAB_PAGE_BAR_ITEM_H_
 
 #import <Foundation/Foundation.h>
 #import <UIKit/UIKit.h>
 
 // Represents an item on the new tab page bar, similar to a UITabBarItem.
 @interface NewTabPageBarItem : NSObject
 
 // Convenience method for creating a tab bar choice.
 + (NewTabPageBarItem*)newTabPageBarItemWithTitle:(NSString*)title
                                       identifier:(NSUInteger)identifier
                                            image:(UIImage*)imageName
     NS_RETURNS_NOT_RETAINED;
 
 @property(nonatomic, copy) NSString* title;
 @property(nonatomic, assign) NSUInteger identifier;
-@property(nonatomic, retain) UIImage* image;
-@property(nonatomic, assign) UIView* view;
+@property(nonatomic, strong) UIImage* image;
+@property(nonatomic, weak) UIView* view;
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_NTP_NEW_TAB_PAGE_BAR_ITEM_H_