Replace FOR_EACH_OBSERVER in chromeos/ with range-based for

chromeos/settings/timezone_settings.cc

 // Copyright 2013 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 "chromeos/settings/timezone_settings.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
@@ skipping 375 matching lines @@
     known_timezone = &timezone;
 
   timezone_.reset(known_timezone->clone());
   std::string id = base::UTF16ToUTF8(GetTimezoneID(*known_timezone));
   VLOG(1) << "Setting timezone to " << id;
   // It's safe to change the timezone config files in the background as the
   // following operations don't depend on the completion of the config change.
   base::WorkerPool::GetTaskRunner(true /* task is slow */)->
       PostTask(FROM_HERE, base::Bind(&SetTimezoneIDFromString, id));
   icu::TimeZone::setDefault(*known_timezone);
-  FOR_EACH_OBSERVER(Observer, observers_, TimezoneChanged(*known_timezone));
+  for (auto& observer : observers_)
+    observer.TimezoneChanged(*known_timezone);
 }
 
 // static
 TimezoneSettingsImpl* TimezoneSettingsImpl::GetInstance() {
   return base::Singleton<
       TimezoneSettingsImpl,
       base::DefaultSingletonTraits<TimezoneSettingsImpl>>::get();
 }
 
 TimezoneSettingsImpl::TimezoneSettingsImpl() {
@@ skipping 26 matching lines @@
   // Replace |timezone| by a known timezone with the same rules. If none exists
   // go on with |timezone|.
   const icu::TimeZone* known_timezone = GetKnownTimezoneOrNull(timezone);
   if (!known_timezone)
     known_timezone = &timezone;
 
   std::string id = base::UTF16ToUTF8(GetTimezoneID(*known_timezone));
   VLOG(1) << "Setting timezone to " << id;
   timezone_.reset(known_timezone->clone());
   icu::TimeZone::setDefault(*known_timezone);
-  FOR_EACH_OBSERVER(Observer, observers_, TimezoneChanged(*known_timezone));
+  for (auto& observer : observers_)
+    observer.TimezoneChanged(*known_timezone);
 }
 
 // static
 TimezoneSettingsStubImpl* TimezoneSettingsStubImpl::GetInstance() {
   return base::Singleton<
       TimezoneSettingsStubImpl,
       base::DefaultSingletonTraits<TimezoneSettingsStubImpl>>::get();
 }
 
 TimezoneSettingsStubImpl::TimezoneSettingsStubImpl() {
@@ skipping 21 matching lines @@
 
 // static
 base::string16 TimezoneSettings::GetTimezoneID(const icu::TimeZone& timezone) {
   icu::UnicodeString id;
   timezone.getID(id);
   return base::string16(id.getBuffer(), id.length());
 }
 
 }  // namespace system
 }  // namespace chromeos