Add ContentSuggestionsService

components/ntp_snippets/ntp_snippet.cc

Index: components/ntp_snippets/ntp_snippet.cc
diff --git a/components/ntp_snippets/ntp_snippet.cc b/components/ntp_snippets/ntp_snippet.cc
index 640aea1e390994ec13896c5a6f6880368953bec5..fa02f576ba8ea423113da08e975f7a6ae373afa3 100644
--- a/components/ntp_snippets/ntp_snippet.cc
+++ b/components/ntp_snippets/ntp_snippet.cc
@@ -10,7 +10,7 @@
 #include "base/values.h"
 #include "components/ntp_snippets/content_suggestion.h"
 #include "components/ntp_snippets/content_suggestion_category.h"
-#include "components/ntp_snippets/content_suggestions_provider_type.h"
+#include "components/ntp_snippets/content_suggestions_provider.h"
 #include "components/ntp_snippets/proto/ntp_snippets.pb.h"
 
 namespace {
@@ -248,7 +248,8 @@ SnippetProto NTPSnippet::ToProto() const {
 
 std::unique_ptr<ContentSuggestion> NTPSnippet::ToContentSuggestion() const {
   std::unique_ptr<ContentSuggestion> result(new ContentSuggestion(
-      id_, ContentSuggestionsProviderType::ARTICLES,
+      ContentSuggestionsProvider::MakeUniqueID(
+          ContentSuggestionCategory::ARTICLE, id_),
       ContentSuggestionCategory::ARTICLE, best_source().url));
   result->set_amp_url(best_source().amp_url);
   result->set_title(title_);