Add LockLayoutManager responsible for lock container (login/lock).

ash/root_window_controller.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/root_window_controller.h"
 
 #include <queue>
 #include <vector>
 
 #include "ash/ash_constants.h"
@@ skipping 16 matching lines @@
 #include "ash/shell_window_ids.h"
 #include "ash/switchable_windows.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/touch/touch_hud_debug.h"
 #include "ash/touch/touch_hud_projection.h"
 #include "ash/touch/touch_observer_hud.h"
 #include "ash/wm/always_on_top_controller.h"
 #include "ash/wm/dock/docked_window_layout_manager.h"
+#include "ash/wm/lock_layout_manager.h"
 #include "ash/wm/panels/attached_panel_window_targeter.h"
 #include "ash/wm/panels/panel_layout_manager.h"
 #include "ash/wm/panels/panel_window_event_handler.h"
 #include "ash/wm/root_window_layout_manager.h"
 #include "ash/wm/screen_dimmer.h"
 #include "ash/wm/stacking_controller.h"
 #include "ash/wm/status_area_layout_manager.h"
 #include "ash/wm/system_background_controller.h"
 #include "ash/wm/system_modal_container_layout_manager.h"
 #include "ash/wm/window_properties.h"
@@ skipping 954 matching lines @@
   ::wm::SetChildWindowVisibilityChangesAnimated(modal_container);
   SetUsesScreenCoordinates(modal_container);
   SetUsesEasyResizeTargeter(modal_container);
 
   // TODO(beng): Figure out if we can make this use
   // SystemModalContainerEventFilter instead of stops_event_propagation.
   aura::Window* lock_container = CreateContainer(
       kShellWindowId_LockScreenContainer,
       "LockScreenContainer",
       lock_screen_containers);
-  lock_container->SetLayoutManager(new WorkspaceLayoutManager(lock_container));
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kAshDisableLockLayoutManager)) {
+    lock_container->SetLayoutManager(
+            new WorkspaceLayoutManager(lock_container));
+  } else {
+    lock_container->SetLayoutManager(new LockLayoutManager(lock_container));
+  }
   SetUsesScreenCoordinates(lock_container);
   // TODO(beng): stopsevents
 
   aura::Window* lock_modal_container = CreateContainer(
       kShellWindowId_LockSystemModalContainer,
       "LockSystemModalContainer",
       lock_screen_containers);
   lock_modal_container->SetLayoutManager(
       new SystemModalContainerLayoutManager(lock_modal_container));
   ::wm::SetChildWindowVisibilityChangesAnimated(lock_modal_container);
@@ skipping 75 matching lines @@
   else
     DisableTouchHudProjection();
 }
 
 RootWindowController* GetRootWindowController(
     const aura::Window* root_window) {
   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
 }
 
 }  // namespace ash