Remove stl_util's deletion functions from chromeos/.

chrome/browser/chromeos/system/timezone_util.cc

Index: chrome/browser/chromeos/system/timezone_util.cc
diff --git a/chrome/browser/chromeos/system/timezone_util.cc b/chrome/browser/chromeos/system/timezone_util.cc
index be305fa9168b16c1690a27d25be7e1aa99cbdc34..36019f42174ba5af7fa791559d6eb54b7a558056 100644
--- a/chrome/browser/chromeos/system/timezone_util.cc
+++ b/chrome/browser/chromeos/system/timezone_util.cc
@@ -146,16 +146,14 @@ namespace system {
 
 // Creates a list of pairs of each timezone's ID and name.
 std::unique_ptr<base::ListValue> GetTimezoneList() {
-  const std::vector<icu::TimeZone*> &timezones =
+  const auto& timezones =
       chromeos::system::TimezoneSettings::GetInstance()->GetTimezoneList();
   std::unique_ptr<base::ListValue> timezoneList(new base::ListValue());
-  for (std::vector<icu::TimeZone*>::const_iterator iter = timezones.begin();
-       iter != timezones.end(); ++iter) {
-    const icu::TimeZone* timezone = *iter;
+  for (const auto& timezone : timezones) {
     base::ListValue* option = new base::ListValue();
     option->Append(new base::StringValue(
-        chromeos::system::TimezoneSettings::GetTimezoneID(*timezone)));
-    option->Append(new base::StringValue(GetTimezoneName(*timezone)));
+        chromeos::system::TimezoneSettings::GetTimezoneID(*timezone.get())));
+    option->Append(new base::StringValue(GetTimezoneName(*timezone.get())));
     timezoneList->Append(option);
   }
   return timezoneList;