Chrome OS multi-profiles backend and UI.

ash/system/user/tray_user.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/user/tray_user.h"
 
 #include <algorithm>
 #include <climits>
 #include <vector>
 
 #include "ash/shell.h"
+#include "ash/shell_delegate.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_item_view.h"
 #include "ash/system/tray/tray_popup_label_button.h"
 #include "ash/system/tray/tray_popup_label_button_border.h"
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 441 matching lines @@
     user_card_area.set_width(std::max(0, remaining_width));
     user_card_->SetBoundsRect(user_card_area);
   } else if (user_card_) {
     user_card_->SetBoundsRect(contents_area);
   } else if (logout_button_) {
     logout_button_->SetBoundsRect(contents_area);
   }
 }
 
 void UserView::ButtonPressed(views::Button* sender, const ui::Event& event) {
-  if (sender == logout_button_)
+  if (sender == logout_button_) {
     ash::Shell::GetInstance()->system_tray_delegate()->SignOut();
-  else if (sender == profile_picture_)
-    ash::Shell::GetInstance()->system_tray_delegate()->ChangeProfilePicture();
-  else
+  } else if (sender == profile_picture_) {
+    if (ash::Shell::GetInstance()->delegate()->IsMultiProfilesEnabled())
+      ash::Shell::GetInstance()->system_tray_delegate()->ShowUserLogin();
+    else
+      ash::Shell::GetInstance()->system_tray_delegate()->ChangeProfilePicture();
+  } else {
     NOTREACHED();
+  }
 }
 
 void UserView::AddLogoutButton(ash::user::LoginStatus login) {
   // A user should not be able to modify logged-in state when screen is
   // locked.
   if (login == ash::user::LOGGED_IN_LOCKED)
     return;
 
   const base::string16 title = ash::user::GetLocalizedSignOutStringForStatus(
       login, true);
@@ skipping 178 matching lines @@
   // Check for null to avoid crbug.com/150944.
   if (avatar_) {
     avatar_->SetImage(
         ash::Shell::GetInstance()->system_tray_delegate()->GetUserImage(),
         gfx::Size(kUserIconSize, kUserIconSize));
   }
 }
 
 }  // namespace internal
 }  // namespace ash