Don't activate a window if screen is locked.

ash/shell_unittest.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/ash_switches.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/aura_shell_test_base.h"
 #include "base/command_line.h"
 #include "base/utf_string_conversions.h"
@@ skipping 224 matching lines @@
   views::Widget* modal_widget = views::Widget::CreateWindowWithParent(
       new ModalWindow(), widget->GetNativeView());
   modal_widget->Show();
   EXPECT_FALSE(Shell::GetInstance()->IsScreenLocked());
   modal_widget->Close();
   EXPECT_FALSE(Shell::GetInstance()->IsScreenLocked());
   widget->Close();
 
   // A lock screen window locks the screen.
   views::Widget* lock_widget = CreateTestWindow(widget_params);
-  ash::Shell::GetInstance()->GetContainer(
-      ash::internal::kShellWindowId_LockScreenContainer)->
-      AddChild(lock_widget->GetNativeView());
+  lock_widget->GetNativeView()->set_stops_event_propagation(true);
+  lock_widget->GetNativeView()->SetParent(NULL);
   lock_widget->Show();
   EXPECT_TRUE(Shell::GetInstance()->IsScreenLocked());
   lock_widget->Hide();
   EXPECT_FALSE(Shell::GetInstance()->IsScreenLocked());
 
   // A modal window with a lock window as parent does not lock the screen. The
   // screen is locked only when a lock windown is visible.
   views::Widget* lock_modal_widget = views::Widget::CreateWindowWithParent(
       new ModalWindow(), lock_widget->GetNativeView());
   lock_modal_widget->Show();
@@ skipping 37 matching lines @@
   // Even for a large screen, the user can force compact mode.
   monitor_size.SetSize(1920, 1080);
   CommandLine command_line2(CommandLine::NO_PROGRAM);
   command_line2.AppendSwitchASCII(ash::switches::kAuraWindowMode,
                                  ash::switches::kAuraWindowModeCompact);
   EXPECT_EQ(Shell::COMPACT_MODE,
             shell->ComputeWindowMode(monitor_size, &command_line2));
 }
 
 }  // namespace ash