Add UMA for the content suggestions settings

components/ntp_snippets/content_suggestions_metrics.cc

Index: components/ntp_snippets/content_suggestions_metrics.cc
diff --git a/components/ntp_snippets/content_suggestions_metrics.cc b/components/ntp_snippets/content_suggestions_metrics.cc
index de0a01136e42051e1baa557e838d89ca277a0b48..b5c9c0423d3a347026020b4b28ace6d86287a34f 100644
--- a/components/ntp_snippets/content_suggestions_metrics.cc
+++ b/components/ntp_snippets/content_suggestions_metrics.cc
@@ -361,5 +361,10 @@ void OnCategoryDismissed(Category category) {
                             HistogramCategories::COUNT);
 }
 
+void RecordRemoteSuggestionsServiceState(bool enabled) {
+  UMA_HISTOGRAM_BOOLEAN(
+      "NewTabPage.ContentSuggestions.Preferences.RemoteSuggestions", enabled);
+}
+
 }  // namespace metrics
 }  // namespace ntp_snippets