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

ios/chrome/browser/ui/bookmarks/bookmark_home_view_controller.mm

 // 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.
 
 #import "ios/chrome/browser/ui/bookmarks/bookmark_home_view_controller.h"
 
-#include "base/mac/objc_property_releaser.h"
-#include "base/mac/scoped_nsobject.h"
 #include "components/bookmarks/browser/base_bookmark_model_observer.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "ios/chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #import "ios/chrome/browser/ui/bookmarks/bookmark_collection_view.h"
 #import "ios/chrome/browser/ui/url_loader.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 using bookmarks::BookmarkNode;
 
-@interface BookmarkHomeViewController () {
-  base::mac::ObjCPropertyReleaser _propertyReleaser_BookmarkHomeViewController;
-}
+@interface BookmarkHomeViewController ()
 
 // Redefined to be readwrite.
-@property(nonatomic, retain, readwrite) NSMutableArray* editIndexPaths;
+@property(nonatomic, strong, readwrite) NSMutableArray* editIndexPaths;
 
 // Returns the parent, if all the bookmarks are siblings.
 // Otherwise returns the mobile_node.
 + (const BookmarkNode*)
 defaultMoveFolderFromBookmarks:(const std::set<const BookmarkNode*>&)bookmarks
                          model:(bookmarks::BookmarkModel*)model;
 @end
 
 @implementation BookmarkHomeViewController
 @synthesize delegate = _delegate;
 @synthesize editIndexPaths = _editIndexPaths;
 @synthesize editing = _editing;
 @synthesize bookmarks = _bookmarks;
 @synthesize loader = _loader;
 @synthesize browserState = _browserState;
 
 - (instancetype)initWithLoader:(id<UrlLoader>)loader
                   browserState:(ios::ChromeBrowserState*)browserState {
   DCHECK(browserState);
   self = [super initWithNibName:nil bundle:nil];
   if (self) {
-    _propertyReleaser_BookmarkHomeViewController.Init(
-        self, [BookmarkHomeViewController class]);
-
     _browserState = browserState->GetOriginalChromeBrowserState();
     _loader = loader;
 
     _bookmarks = ios::BookmarkModelFactory::GetForBrowserState(_browserState);
     _editIndexPaths = [[NSMutableArray alloc] init];
 
     [self resetEditNodes];
   }
   return self;
 }
 
 - (void)loadView {
   CGRect frame = [[UIScreen mainScreen] bounds];
-  self.view =
-      base::scoped_nsobject<UIView>([[UIView alloc] initWithFrame:frame]);
+  self.view = [[UIView alloc] initWithFrame:frame];
 }
 
 - (void)resetEditNodes {
   _editNodes = std::set<const BookmarkNode*>();
   _editNodesOrdered = std::vector<const BookmarkNode*>();
   [self.editIndexPaths removeAllObjects];
 }
 
 - (void)insertEditNode:(const BookmarkNode*)node
            atIndexPath:(NSIndexPath*)indexPath {
@@ skipping 66 matching lines @@
 
 - (const std::set<const BookmarkNode*>&)editNodes {
   return _editNodes;
 }
 
 - (void)setEditNodes:(const std::set<const BookmarkNode*>&)editNodes {
   _editNodes = editNodes;
 }
 
 @end