ash uber tray: Allow customizing each item depending on whether the user is logged in or not.

ash/system/brightness/tray_brightness.cc

 // Copyright (c) 2012 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/system/brightness/tray_brightness.h"
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/shell.h"
 #include "ash/system/brightness/brightness_control_delegate.h"
 #include "ash/system/tray/system_tray_delegate.h"
@@ skipping 65 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(BrightnessView);
 };
 
 }  // namespace tray
 
 TrayBrightness::TrayBrightness() {}
 
 TrayBrightness::~TrayBrightness() {}
 
-views::View* TrayBrightness::CreateTrayView() {
+views::View* TrayBrightness::CreateTrayView(user::LoginStatus status) {
   return NULL;
 }
 
-views::View* TrayBrightness::CreateDefaultView() {
+views::View* TrayBrightness::CreateDefaultView(user::LoginStatus status) {
   brightness_view_.reset(new tray::BrightnessView);
   return brightness_view_.get();
 }
 
-views::View* TrayBrightness::CreateDetailedView() {
+views::View* TrayBrightness::CreateDetailedView(user::LoginStatus status) {
   brightness_view_.reset(new tray::BrightnessView);
   return brightness_view_.get();
 }
 
 void TrayBrightness::DestroyTrayView() {
 }
 
 void TrayBrightness::DestroyDefaultView() {
   brightness_view_.reset();
 }
 
 void TrayBrightness::DestroyDetailedView() {
   brightness_view_.reset();
 }
 
 void TrayBrightness::OnBrightnessChanged(float percent, bool user_initiated) {
   if (brightness_view_.get()) {
     brightness_view_->SetBrightnessLevel(percent);
     return;
   }
   if (!user_initiated)
     return;
   PopupDetailedView();
 }
 
 }  // namespace internal
 }  // namespace ash