Add UMA for the content suggestions settings

components/ntp_snippets/content_suggestions_metrics.cc

 // 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.
 
 #include "components/ntp_snippets/content_suggestions_metrics.h"
 
 #include <cmath>
 #include <string>
 #include <type_traits>
 
@@ skipping 343 matching lines @@
   LogCategoryHistogramPosition(kHistogramMoreButtonClicked, category, position,
                                kMaxSuggestionsPerCategory + 1);
 }
 
 void OnCategoryDismissed(Category category) {
   UMA_HISTOGRAM_ENUMERATION(kHistogramCategoryDismissed,
                             GetHistogramCategory(category),
                             HistogramCategories::COUNT);
 }
 
+void RecordRemoteSuggestionsProviderState(bool enabled) {
+  UMA_HISTOGRAM_BOOLEAN(
+      "NewTabPage.ContentSuggestions.Preferences.RemoteSuggestions", enabled);
+}
+
 }  // namespace metrics
 }  // namespace ntp_snippets