Add ContentSuggestionsCategoryFactory; Store categories as ints

components/ntp_snippets/content_suggestions_category_status.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_CONTENT_SUGGESTIONS_CATEGORY_STATUS_H_
 #define COMPONENTS_NTP_SNIPPETS_CONTENT_SUGGESTIONS_CATEGORY_STATUS_H_
 
 namespace ntp_snippets {
 
 // Represents the status of a category of content suggestions.
@@ skipping 23 matching lines @@
   // Content suggestions are not available because the user is not signed in.
   SIGNED_OUT,
   // Content suggestions are not available because sync is disabled.
   SYNC_DISABLED,
   // Content suggestions are not available because passphrase encryption is
   // enabled (and it should be disabled).
   PASSPHRASE_ENCRYPTION_ENABLED,
   // Content suggestions are not available because history sync is disabled.
   HISTORY_SYNC_DISABLED,
 
-  // Content suggestions are not available because an error occured when loading
-  // or updating them.
+  // Content suggestions are not available because an error occurred when
+  // loading or updating them.
   LOADING_ERROR
 };
 
 // Determines whether the given status is one of the AVAILABLE statuses.
 bool IsContentSuggestionsCategoryStatusAvailable(
     ContentSuggestionsCategoryStatus status);
 
 // Determines whether the given status is INITIALIZING or one of the AVAILABLE
 // statuses. All of these statuses have in common that there is or will soon be
 // content.
 bool IsContentSuggestionsCategoryStatusInitOrAvailable(
     ContentSuggestionsCategoryStatus status);
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_CONTENT_SUGGESTIONS_CATEGORY_STATUS_H_