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

ios/chrome/browser/ui/bookmarks/bookmark_home_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_BOOKMARKS_BOOKMARK_HOME_VIEW_CONTROLLER_H_
 #define IOS_CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_HOME_VIEW_CONTROLLER_H_
 
 #import "ios/chrome/browser/ui/ntp/new_tab_page_panel_protocol.h"
 
 #include <set>
@@ skipping 33 matching lines @@
   // DO NOT modify these two ivars directly.
   std::set<const bookmarks::BookmarkNode*> _editNodes;
   std::vector<const bookmarks::BookmarkNode*> _editNodesOrdered;
 }
 // Designated initializer.
 - (instancetype)initWithLoader:(id<UrlLoader>)loader
                   browserState:(ios::ChromeBrowserState*)browserState;
 
 #pragma mark - Properties Relevant To Presenters
 
-@property(nonatomic, assign) id<BookmarkHomeViewControllerDelegate> delegate;
+@property(nonatomic, weak) id<BookmarkHomeViewControllerDelegate> delegate;
 
 #pragma mark - Properties Relevant To Subclasses
 
 // Whether the view controller is in editing mode.
 @property(nonatomic, assign, readonly) BOOL editing;
 // The set of selected index paths for edition.
-@property(nonatomic, retain, readonly) NSMutableArray* editIndexPaths;
+@property(nonatomic, strong, readonly) NSMutableArray* editIndexPaths;
 @property(nonatomic, assign, readonly) bookmarks::BookmarkModel* bookmarks;
-@property(nonatomic, assign, readonly) id<UrlLoader> loader;
+@property(nonatomic, weak, readonly) id<UrlLoader> loader;
 @property(nonatomic, assign, readonly) ios::ChromeBrowserState* browserState;
 
 #pragma mark - Relevant Methods
 // Replaces |_editNodes| and |_editNodesOrdered| with new container objects.
 - (void)resetEditNodes;
 // Adds |node| and |indexPath| if it isn't already present.
 - (void)insertEditNode:(const bookmarks::BookmarkNode*)node
            atIndexPath:(NSIndexPath*)indexPath;
 // Removes |node| and |indexPath| if it's present.
 - (void)removeEditNode:(const bookmarks::BookmarkNode*)node
@@ skipping 10 matching lines @@
 - (void)dismissModals:(BOOL)animated;
 
 @end
 
 @interface BookmarkHomeViewController (PrivateAPIExposedForTesting)
 - (const std::set<const bookmarks::BookmarkNode*>&)editNodes;
 - (void)setEditNodes:(const std::set<const bookmarks::BookmarkNode*>&)editNodes;
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_HOME_VIEW_CONTROLLER_H_