Replace FOR_EACH_OBSERVER in c/b/chromeos with range-based for

chrome/browser/chromeos/system/automatic_reboot_manager.cc

 // Copyright (c) 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 "chrome/browser/chromeos/system/automatic_reboot_manager.h"
 
 #include <fcntl.h>
 #include <stddef.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ skipping 182 matching lines @@
       worker_pool->GetNamedSequenceToken(kSequenceToken),
       FROM_HERE,
       base::Bind(&GetSystemEventTimes,
                  base::ThreadTaskRunnerHandle::Get(),
                  base::Bind(&AutomaticRebootManager::Init,
                             weak_ptr_factory_.GetWeakPtr())),
       base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
 }
 
 AutomaticRebootManager::~AutomaticRebootManager() {
-  FOR_EACH_OBSERVER(AutomaticRebootManagerObserver,
-                    observers_,
-                    WillDestroyAutomaticRebootManager());
+  for (auto& observer : observers_)
+    observer.WillDestroyAutomaticRebootManager();
 
   DBusThreadManager* dbus_thread_manager = DBusThreadManager::Get();
   dbus_thread_manager->GetPowerManagerClient()->RemoveObserver(this);
   dbus_thread_manager->GetUpdateEngineClient()->RemoveObserver(this);
   if (ui::UserActivityDetector::Get())
     ui::UserActivityDetector::Get()->RemoveObserver(this);
 }
 
 void AutomaticRebootManager::AddObserver(
     AutomaticRebootManagerObserver* observer) {
@@ skipping 161 matching lines @@
   grace_end_timer_->Start(FROM_HERE,
                           std::max(grace_end_time - now, kZeroTimeDelta),
                           base::Bind(&AutomaticRebootManager::Reboot,
                                      base::Unretained(this)));
 }
 
 void AutomaticRebootManager::RequestReboot() {
   reboot_requested_ = true;
   DCHECK_NE(AutomaticRebootManagerObserver::REBOOT_REASON_UNKNOWN,
             reboot_reason_);
-  FOR_EACH_OBSERVER(AutomaticRebootManagerObserver,
-                    observers_,
-                    OnRebootRequested(reboot_reason_));
+  for (auto& observer : observers_)
+    observer.OnRebootRequested(reboot_reason_);
   MaybeReboot(false);
 }
 
 void AutomaticRebootManager::MaybeReboot(bool ignore_session) {
   // Do not reboot if any of the following applies:
   // * No reboot has been requested.
   // * A user is interacting with the login screen.
   // * A session is in progress and |ignore_session| is not set.
   if (!reboot_requested_ ||
       (login_screen_idle_timer_ && login_screen_idle_timer_->IsRunning()) ||
@@ skipping 12 matching lines @@
   }
 
   login_screen_idle_timer_.reset();
   grace_start_timer_.reset();
   grace_end_timer_.reset();
   DBusThreadManager::Get()->GetPowerManagerClient()->RequestRestart();
 }
 
 }  // namespace system
 }  // namespace chromeos