Revert of [ObjC ARC] Converts ios/chrome/browser/ui/bookmarks:bookmarks_arc_2 to ARC.

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

Index: ios/chrome/browser/ui/bookmarks/bookmark_collection_view_background.mm
diff --git a/ios/chrome/browser/ui/bookmarks/bookmark_collection_view_background.mm b/ios/chrome/browser/ui/bookmarks/bookmark_collection_view_background.mm
index 38461e5032e7d4874f8087e313f079939ab48d2a..f8974777bf1c538bbd11cf8563fbb5a98058d1f7 100644
--- a/ios/chrome/browser/ui/bookmarks/bookmark_collection_view_background.mm
+++ b/ios/chrome/browser/ui/bookmarks/bookmark_collection_view_background.mm
@@ -4,11 +4,8 @@
 
 #include "ios/chrome/browser/ui/bookmarks/bookmark_collection_view_background.h"
 
+#include "base/mac/objc_property_releaser.h"
 #import "ios/third_party/material_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
 
 namespace {
 NSString* const kBookmarkGrayStar = @"bookmark_gray_star_large";
@@ -17,7 +14,10 @@
 const CGFloat kImageViewOffsetFromText = 5.0;
 }  // namespace
 
-@interface BookmarkCollectionViewBackground ()
+@interface BookmarkCollectionViewBackground () {
+  base::mac::ObjCPropertyReleaser
+      _propertyReleaser_BookmarkBookmarkCollectionViewBackground;
+}
 
 // Star image view shown on top of the label.
 @property(nonatomic, retain) UIImageView* emptyBookmarksImageView;
@@ -34,6 +34,8 @@
 - (instancetype)initWithFrame:(CGRect)frame {
   self = [super initWithFrame:frame];
   if (self) {
+    _propertyReleaser_BookmarkBookmarkCollectionViewBackground.Init(
+        self, [BookmarkCollectionViewBackground class]);
     _emptyBookmarksImageView = [self newBookmarkImageView];
     [self addSubview:_emptyBookmarksImageView];
     _emptyBookmarksLabel = [self newEmptyBookmarkLabel];