c/b/supervised_user: Use range-based for where appropriate.

chrome/browser/supervised_user/supervised_user_settings_service.cc

Index: chrome/browser/supervised_user/supervised_user_settings_service.cc
diff --git a/chrome/browser/supervised_user/supervised_user_settings_service.cc b/chrome/browser/supervised_user/supervised_user_settings_service.cc
index ccc3112af2196c5afc236d98f0b5c0aa5602a645..1e043c26f203ce61cfba42e2fdc1b627d285e3b3 100644
--- a/chrome/browser/supervised_user/supervised_user_settings_service.cc
+++ b/chrome/browser/supervised_user/supervised_user_settings_service.cc
@@ -173,11 +173,10 @@ SyncMergeResult SupervisedUserSettingsService::MergeDataAndStartSyncing(
 
   // Clear all atomic and split settings, then recreate them from Sync data.
   Clear();
-  for (SyncDataList::const_iterator it = initial_sync_data.begin();
-       it != initial_sync_data.end(); ++it) {
-    DCHECK_EQ(SUPERVISED_USER_SETTINGS, it->GetDataType());
+  for (const auto& sync_data : initial_sync_data) {
+    DCHECK_EQ(SUPERVISED_USER_SETTINGS, sync_data.GetDataType());
     const ::sync_pb::ManagedUserSettingSpecifics& supervised_user_setting =
-        it->GetSpecifics().managed_user_setting();
+        sync_data.GetSpecifics().managed_user_setting();
     scoped_ptr<base::Value> value(
         JSONReader::Read(supervised_user_setting.value()));
     std::string name_suffix = supervised_user_setting.name();
@@ -248,24 +247,24 @@ SyncDataList SupervisedUserSettingsService::GetAllSyncData(
 SyncError SupervisedUserSettingsService::ProcessSyncChanges(
     const tracked_objects::Location& from_here,
     const SyncChangeList& change_list) {
-  for (SyncChangeList::const_iterator it = change_list.begin();
-       it != change_list.end(); ++it) {
-    SyncData data = it->sync_data();
+  for (const auto& sync_change : change_list) {
+    SyncData data = sync_change.sync_data();
     DCHECK_EQ(SUPERVISED_USER_SETTINGS, data.GetDataType());
     const ::sync_pb::ManagedUserSettingSpecifics& supervised_user_setting =
         data.GetSpecifics().managed_user_setting();
     std::string key = supervised_user_setting.name();
     base::DictionaryValue* dict = GetDictionaryAndSplitKey(&key);
-    switch (it->change_type()) {
+    SyncChange::SyncChangeType change_type = sync_change.change_type();
+    switch (change_type) {
       case SyncChange::ACTION_ADD:
       case SyncChange::ACTION_UPDATE: {
         scoped_ptr<base::Value> value(
             JSONReader::Read(supervised_user_setting.value()));
         if (dict->HasKey(key)) {
-          DLOG_IF(WARNING, it->change_type() == SyncChange::ACTION_ADD)
+          DLOG_IF(WARNING, change_type == SyncChange::ACTION_ADD)
               << "Value for key " << key << " already exists";
         } else {
-          DLOG_IF(WARNING, it->change_type() == SyncChange::ACTION_UPDATE)
+          DLOG_IF(WARNING, change_type == SyncChange::ACTION_UPDATE)
               << "Value for key " << key << " doesn't exist yet";
         }
         dict->SetWithoutPathExpansion(key, value.release());
@@ -379,8 +378,7 @@ void SupervisedUserSettingsService::InformSubscribers() {
     return;
 
   scoped_ptr<base::DictionaryValue> settings = GetSettings();
-  for (std::vector<SettingsCallback>::iterator it = subscribers_.begin();
-       it != subscribers_.end(); ++it) {
-    it->Run(settings.get());
+  for (const auto& callback : subscribers_) {
+    callback.Run(settings.get());
   }
 }