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

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

Index: ios/chrome/browser/ui/bookmarks/bookmark_elevated_toolbar.mm
diff --git a/ios/chrome/browser/ui/bookmarks/bookmark_elevated_toolbar.mm b/ios/chrome/browser/ui/bookmarks/bookmark_elevated_toolbar.mm
index 4bef5ba1fec76b46ccb71b5a12431760a305a397..0c2329a7e1262c3739cc02fe964e4e724665bc3e 100644
--- a/ios/chrome/browser/ui/bookmarks/bookmark_elevated_toolbar.mm
+++ b/ios/chrome/browser/ui/bookmarks/bookmark_elevated_toolbar.mm
@@ -4,15 +4,26 @@
 
 #import "ios/chrome/browser/ui/bookmarks/bookmark_elevated_toolbar.h"
 
+#include "base/mac/objc_property_releaser.h"
 #import "ios/third_party/material_components_ios/src/components/ShadowElevations/src/MaterialShadowElevations.h"
 #import "ios/third_party/material_components_ios/src/components/ShadowLayer/src/MaterialShadowLayer.h"
 
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
+@implementation BookmarksElevatedToolbar {
+  base::mac::ObjCPropertyReleaser _propertyReleaser_BookmarksElevatedToolbar;
+}
 
-@implementation BookmarksElevatedToolbar
 @synthesize shadowLayer = _shadowLayer;
+
+#pragma mark - Lifecycle
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _propertyReleaser_BookmarksElevatedToolbar.Init(
+        self, [BookmarksElevatedToolbar class]);
+  }
+  return self;
+}
 
 #pragma mark - Properties