Display offline availability on ContentSuggestions

ios/chrome/browser/ui/content_suggestions/content_suggestion_extra.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.h"
-
-#include "base/time/time.h"
-#include "url/gurl.h"
+#import "ios/chrome/browser/ui/content_suggestions/content_suggestion_extra.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
-@implementation ContentSuggestion
+@implementation ContentSuggestionReadingListExtra
 
-@synthesize title = _title;
-@synthesize text = _text;
-@synthesize url = _url;
-@synthesize publisher = _publisher;
-@synthesize publishDate = _publishDate;
-@synthesize suggestionIdentifier = _suggestionIdentifier;
-@synthesize type = _type;
++ (ContentSuggestionReadingListExtra*)extraWithStatus:
+    (ReadingListUIDistillationStatus)status {
+  ContentSuggestionReadingListExtra* extra =
+      [[ContentSuggestionReadingListExtra alloc] init];
+  extra.status = status;
+  return extra;
+}
+
+@synthesize status = _status;
 
 @end