Snippets are enabled when search suggestions are enabled.

components/ntp_snippets/ntp_snippets_service.h

Index: components/ntp_snippets/ntp_snippets_service.h
diff --git a/components/ntp_snippets/ntp_snippets_service.h b/components/ntp_snippets/ntp_snippets_service.h
index a18853044b2fdbcbae9b3267da9442ae4085a4f0..dedb8e32d171838abf0dd0429b573ca0a88b9058 100644
--- a/components/ntp_snippets/ntp_snippets_service.h
+++ b/components/ntp_snippets/ntp_snippets_service.h
@@ -57,6 +57,7 @@ class NTPSnippetsService : public KeyedService {
   // the locale, so 'en_US' (English language with US locale) and 'en-GB_US'
   // (British English person in the US) are not language codes.
   NTPSnippetsService(
+      bool enabled,
       PrefService* pref_service,
       suggestions::SuggestionsService* suggestions_service,
       scoped_refptr<base::SequencedTaskRunner> file_task_runner,
@@ -68,7 +69,7 @@ class NTPSnippetsService : public KeyedService {
 
   static void RegisterProfilePrefs(PrefRegistrySimple* registry);
 
-  void Init(bool enabled);
+  void Init();
 
   // Inherited from KeyedService.
   void Shutdown() override;