Display offline availability on ContentSuggestions

ios/chrome/browser/ui/content_suggestions/content_suggestion_extra_builder.mm

+// Copyright 2017 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/content_suggestions/content_suggestion_extra_builder.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@implementation ContentSuggestionReadingListExtra
+
++ (ContentSuggestionReadingListExtra*)extraWithDistillationStatus:
+    (ReadingListUIDistillationStatus)status {
+  ContentSuggestionReadingListExtra* extra =
+      [[ContentSuggestionReadingListExtra alloc] init];
+  extra.status = status;
+  return extra;
+}
+
+@synthesize status = _status;
+
+@end