Remove deleted offline page suggestions from opened NTPs

components/ntp_snippets/category_factory.h

 // Copyright 2016 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.
 
 #ifndef COMPONENTS_NTP_SNIPPETS_CATEGORY_FACTORY_H_
 #define COMPONENTS_NTP_SNIPPETS_CATEGORY_FACTORY_H_
 
 #include <map>
 #include <vector>
 
 #include "base/macros.h"
 #include "components/ntp_snippets/category.h"
 
 namespace ntp_snippets {
 
-// Creates and orders Category instancesCategory.
+// Creates and orders Category instances.
 class CategoryFactory {
  public:
   CategoryFactory();
   ~CategoryFactory();
 
   // Creates a category from a KnownCategory value. The passed |known_category|
   // must not be one of the special values (LOCAL_CATEGORIES_COUNT or
   // REMOTE_CATEGORIES_OFFSET).
   Category FromKnownCategory(KnownCategories known_category);
 
@@ skipping 24 matching lines @@
   // Stores all known categories in the order which is also returned by
   // |CompareCategories|.
   std::vector<Category> ordered_categories_;
 
   DISALLOW_COPY_AND_ASSIGN(CategoryFactory);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_CATEGORY_FACTORY_H_