Metrics for feature engagement tracker.

components/feature_engagement_tracker/internal/editable_configuration.cc

 // Copyright 2017 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/feature_engagement_tracker/internal/editable_configuration.h"
 
 #include <map>
 
 #include "base/logging.h"
 #include "components/feature_engagement_tracker/internal/configuration.h"
@@ skipping 10 matching lines @@
   configs_[feature] = feature_config;
 }
 
 const FeatureConfig& EditableConfiguration::GetFeatureConfig(
     const base::Feature& feature) const {
   auto it = configs_.find(&feature);
   DCHECK(it != configs_.end());
   return it->second;
 }
 
+const Configuration::ConfigMap& EditableConfiguration::GetRegisteredFeatures()
+    const {
+  return configs_;
+}
+
 }  // namespace feature_engagement_tracker