Add ContentSuggestionsService

components/ntp_snippets/content_suggestion_category.h

Index: components/ntp_snippets/content_suggestion_category.h
diff --git a/components/ntp_snippets/content_suggestion_category.h b/components/ntp_snippets/content_suggestion_category.h
deleted file mode 100644
index 80268fbe1405ca4c8dc48ac516c5536c57997a3f..0000000000000000000000000000000000000000
--- a/components/ntp_snippets/content_suggestion_category.h
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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_SUGGESTION_CATEGORY_H_
-#define COMPONENTS_NTP_SNIPPETS_CONTENT_SUGGESTION_CATEGORY_H_
-
-namespace ntp_snippets {
-
-// The category of a content suggestion. Note that even though these categories
-// currently match the provider types, a provider type is not limited to provide
-// suggestions of a single (fixed) category only. The category is used to
-// determine where to display the suggestion.
-enum class ContentSuggestionCategory : int { ARTICLE };
-
-}  // namespace ntp_snippets
-
-#endif  // COMPONENTS_NTP_SNIPPETS_CONTENT_SUGGESTION_CATEGORY_H_