[ImportantStorage] Blacklisted reason metrics

chrome/browser/android/preferences/important_sites_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_PREFERENCES_IMPORTANT_SITES_UTIL_H_
 #define CHROME_BROWSER_ANDROID_PREFERENCES_IMPORTANT_SITES_UTIL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 10 matching lines @@
   // If |optional_example_origins| is specified we populate that list with
   // example origins for each domain. This can be used to retrieve favicons.
   // See net/base/registry_controlled_domains/registry_controlled_domain.h for
   // more details on registrable domains and the current list of effective
   // eTLDs.
   static std::vector<std::string> GetImportantRegisterableDomains(
       Profile* profile,
       size_t max_results,
       std::vector<GURL>* optional_example_origins);
 
+  static void RecordMetricsForBlacklistedSites(
+      Profile* profile,
+      std::vector<std::string> blacklisted_sites);
+
   // This marks the given origin as important so we can test features that rely
   // on important sites.
   static void MarkOriginAsImportantForTesting(Profile* profile,
                                               const GURL& origin);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(ImportantSitesUtil);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_PREFERENCES_IMPORTANT_SITES_UTIL_H_