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

chrome/browser/chromeos/login/ui/webui_login_view.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 "chrome/browser/chromeos/login/ui/webui_login_view.h"
 
 #include "ash/common/focus_cycler.h"
 #include "ash/common/system/status_area_widget_delegate.h"
 #include "ash/common/system/tray/system_tray.h"
 #include "ash/common/wm_shell.h"
@@ skipping 215 matching lines @@
 
   accel_map_[ui::Accelerator(
       ui::VKEY_S, ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN | ui::EF_SHIFT_DOWN)] =
       kAccelNameBootstrappingSlave;
 
   for (AccelMap::iterator i(accel_map_.begin()); i != accel_map_.end(); ++i)
     AddAccelerator(i->first);
 }
 
 WebUILoginView::~WebUILoginView() {
-  FOR_EACH_OBSERVER(web_modal::ModalDialogHostObserver,
-                    observer_list_,
-                    OnHostDestroying());
+  for (auto& observer : observer_list_)
+    observer.OnHostDestroying();
 
   if (!chrome::IsRunningInMash() &&
       ash::Shell::GetInstance()->HasPrimaryStatusArea()) {
     views::Widget* tray_widget =
         ash::Shell::GetInstance()->GetPrimarySystemTray()->GetWidget();
     ash::StatusAreaWidgetDelegate* status_area_widget_delegate =
         static_cast<ash::StatusAreaWidgetDelegate*>(
             tray_widget->GetContentsView());
     status_area_widget_delegate->set_custom_focus_traversable(nullptr);
     status_area_widget_delegate->set_default_last_focusable_child(false);
@@ skipping 187 matching lines @@
 
   tray->SetEnabled(enabled);
 }
 
 // WebUILoginView protected: ---------------------------------------------------
 
 void WebUILoginView::Layout() {
   DCHECK(webui_login_);
   webui_login_->SetBoundsRect(bounds());
 
-  FOR_EACH_OBSERVER(web_modal::ModalDialogHostObserver,
-                    observer_list_,
-                    OnPositionRequiresUpdate());
+  for (auto& observer : observer_list_)
+    observer.OnPositionRequiresUpdate();
 }
 
 void WebUILoginView::OnLocaleChanged() {
 }
 
 void WebUILoginView::ChildPreferredSizeChanged(View* child) {
   Layout();
   SchedulePaint();
 }
 
@@ skipping 152 matching lines @@
   if (should_emit_login_prompt_visible_) {
     VLOG(1) << "Login WebUI >> login-prompt-visible";
     chromeos::DBusThreadManager::Get()->GetSessionManagerClient()->
         EmitLoginPromptVisible();
   }
 
   webui_visible_ = true;
 }
 
 }  // namespace chromeos