Remove usage of FOR_EACH_OBSERVER macro in ash/

ash/display/screen_orientation_controller_chromeos.cc

 // Copyright 2014 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 "ash/display/screen_orientation_controller_chromeos.h"
 
 #include "ash/common/ash_switches.h"
 #include "ash/common/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
@@ skipping 114 matching lines @@
          !base::CommandLine::ForCurrentProcess()->HasSwitch(
              switches::kAshDisableScreenOrientationLock);
 }
 
 void ScreenOrientationController::SetRotationLocked(bool rotation_locked) {
   if (rotation_locked_ == rotation_locked)
     return;
   rotation_locked_ = rotation_locked;
   if (!rotation_locked_)
     rotation_locked_orientation_ = blink::WebScreenOrientationLockAny;
-  FOR_EACH_OBSERVER(Observer, observers_,
-                    OnRotationLockChanged(rotation_locked_));
+  for (auto& observer : observers_)
+    observer.OnRotationLockChanged(rotation_locked_);
   if (!display::Display::HasInternalDisplay())
     return;
   base::AutoReset<bool> auto_ignore_display_configuration_updates(
       &ignore_display_configuration_updates_, true);
   Shell::GetInstance()->display_manager()->RegisterDisplayRotationProperties(
       rotation_locked_, current_rotation_);
 }
 
 void ScreenOrientationController::SetDisplayRotation(
     display::Display::Rotation rotation,
@@ skipping 271 matching lines @@
 }
 
 bool ScreenOrientationController::CanRotateInLockedState() {
   return rotation_locked_orientation_ ==
              blink::WebScreenOrientationLockLandscape ||
          rotation_locked_orientation_ ==
              blink::WebScreenOrientationLockPortrait;
 }
 
 }  // namespace ash