Adding new user menu section to the SystemTrayMenu & refactoring of user access

ash/wm/gestures/shelf_gesture_handler.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/wm/gestures/shelf_gesture_handler.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/session_state_delegate.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shelf/shelf_types.h"
@@ skipping 13 matching lines @@
 
 ShelfGestureHandler::ShelfGestureHandler()
     : drag_in_progress_(false) {
 }
 
 ShelfGestureHandler::~ShelfGestureHandler() {
 }
 
 bool ShelfGestureHandler::ProcessGestureEvent(const ui::GestureEvent& event) {
   Shell* shell = Shell::GetInstance();
-  if (!shell->session_state_delegate()->HasActiveUser() ||
+  if (!shell->session_state_delegate()->NumberOfLoggedInUsers() ||
       shell->session_state_delegate()->IsScreenLocked()) {
     // The gestures are disabled in the lock/login screen.
     return false;
   }
 
   // The gesture are disabled for fullscreen windows.
   aura::Window* active = wm::GetActiveWindow();
   if (active && wm::IsWindowFullscreen(active))
     return false;
 
@@ skipping 34 matching lines @@
     return true;
   }
 
   // Unexpected event. Reset the state and let the event fall through.
   shelf->CancelGestureDrag();
   return false;
 }
 
 }  // namespace internal
 }  // namespace ash