Remove groups handling from password manager metrics util

components/password_manager/core/browser/password_manager_metrics_util.cc

Index: components/password_manager/core/browser/password_manager_metrics_util.cc
diff --git a/components/password_manager/core/browser/password_manager_metrics_util.cc b/components/password_manager/core/browser/password_manager_metrics_util.cc
index 5e4c0c6d49159f7394ac5b7d402533488ee403ab..d26f8a922477edd2caf1938e3a8b886cd65d9157 100644
--- a/components/password_manager/core/browser/password_manager_metrics_util.cc
+++ b/components/password_manager/core/browser/password_manager_metrics_util.cc
@@ -24,82 +24,6 @@ namespace password_manager {
 
 namespace metrics_util {
 
-namespace {
-
-// The number of domain groups.
-const size_t kNumGroups = 2u * kGroupsPerDomain;
-
-// |kDomainMapping| contains each monitored website together with all ids of
-// groups which contain the website. Each website appears in
-// |kGroupsPerDomain| groups, and each group includes an equal number of
-// websites, so that no two websites have the same set of groups that they
-// belong to. All ids are in the range [1, |kNumGroups|].
-// For more information about the algorithm used see http://goo.gl/vUuFd5.
-struct DomainGroupsPair {
-  const char* const domain_name;
-  const size_t group_ids[kGroupsPerDomain];
-};
-const DomainGroupsPair kDomainMapping[] = {
-    {"google.com", {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}},
-    {"yahoo.com", {1, 2, 3, 4, 5, 11, 12, 13, 14, 15}},
-    {"baidu.com", {1, 2, 3, 4, 6, 7, 11, 12, 16, 17}},
-    {"wikipedia.org", {1, 2, 3, 4, 5, 6, 11, 12, 16, 18}},
-    {"linkedin.com", {1, 6, 8, 11, 13, 14, 15, 16, 17, 19}},
-    {"twitter.com", {5, 6, 7, 8, 9, 11, 13, 17, 19, 20}},
-    {"facebook.com", {7, 8, 9, 10, 13, 14, 16, 17, 18, 20}},
-    {"amazon.com", {2, 5, 9, 10, 12, 14, 15, 18, 19, 20}},
-    {"ebay.com", {3, 7, 9, 10, 14, 15, 17, 18, 19, 20}},
-    {"tumblr.com", {4, 8, 10, 12, 13, 15, 16, 18, 19, 20}},
-};
-const size_t kNumDomains = arraysize(kDomainMapping);
-
-// For every monitored domain, this function chooses which of the groups
-// containing that domain should be used for reporting. That number is chosen
-// randomly and stored in the user's preferences.
-size_t GetGroupIndex(size_t domain_index, PrefService* pref_service) {
-  DCHECK_LT(domain_index, kNumDomains);
-
-  const base::ListValue* group_indices =
-      pref_service->GetList(prefs::kPasswordManagerGroupsForDomains);
-  int result = 0;
-  if (!group_indices->GetInteger(domain_index, &result)) {
-    ListPrefUpdate group_indices_updater(
-        pref_service, prefs::kPasswordManagerGroupsForDomains);
-    // This value has not been generated yet.
-    result = base::checked_cast<int>(base::RandGenerator(kGroupsPerDomain));
-    group_indices_updater->Set(domain_index, new FundamentalValue(result));
-  }
-  return base::checked_cast<size_t>(result);
-}
-
-}  // namespace
-
-size_t MonitoredDomainGroupId(const std::string& url_host,
-                              PrefService* pref_service) {
-  GURL url(url_host);
-  for (size_t i = 0; i < kNumDomains; ++i) {
-    if (url.DomainIs(kDomainMapping[i].domain_name))
-      return kDomainMapping[i].group_ids[GetGroupIndex(i, pref_service)];
-  }
-  return 0;
-}
-
-void LogUMAHistogramEnumeration(const std::string& name,
-                                int sample,
-                                int boundary_value) {
-  DCHECK_LT(sample, boundary_value);
-
-  // Note: This leaks memory, which is expected behavior.
-  base::HistogramBase* histogram =
-      base::LinearHistogram::FactoryGet(
-          name,
-          1,
-          boundary_value,
-          boundary_value + 1,
-          base::HistogramBase::kUmaTargetedHistogramFlag);
-  histogram->Add(sample);
-}
-
 void LogUMAHistogramBoolean(const std::string& name, bool sample) {
   // Note: This leaks memory, which is expected behavior.
   base::HistogramBase* histogram = base::BooleanHistogram::FactoryGet(
@@ -107,13 +31,6 @@ void LogUMAHistogramBoolean(const std::string& name, bool sample) {
   histogram->AddBoolean(sample);
 }
 
-std::string GroupIdToString(size_t group_id) {
-  DCHECK_LE(group_id, kNumGroups);
-  if (group_id > 0)
-    return "group_" + base::SizeTToString(group_id);
-  return std::string();
-}
-
 void LogUIDismissalReason(ResponseType type) {
   UIDismissalReason reason = NO_DIRECT_INTERACTION;
   switch (type) {