aura: Remove layerless windows.

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 82 matching lines @@
 const int kBootSplashScreenHideDurationMs = 500;
 #endif
 
 // Creates a new window for use as a container.
 aura::Window* CreateContainer(int window_id,
                               const char* name,
                               aura::Window* parent) {
   aura::Window* container = new aura::Window(NULL);
   container->set_id(window_id);
   container->SetName(name);
-  container->Init(aura::WINDOW_LAYER_NOT_DRAWN);
+  container->Init(ui::LAYER_NOT_DRAWN);
   parent->AddChild(container);
   if (window_id != kShellWindowId_UnparentedControlContainer)
     container->Show();
   return container;
 }
 
 float ToRelativeValue(int value, int src, int dst) {
   return static_cast<float>(value) / static_cast<float>(src) * dst;
 }
 
@@ skipping 642 matching lines @@
   // TODO(harrym): Remove when status area is view.
   aura::Window* status_container = GetContainer(kShellWindowId_StatusContainer);
   shelf_.reset(new ShelfWidget(
       shelf_container, status_container, workspace_controller()));
 
   if (!Shell::GetInstance()->session_state_delegate()->
       IsActiveUserSessionStarted()) {
     // This window exists only to be a event target on login screen.
     // It does not have to handle events, nor be visible.
     mouse_event_target_.reset(new aura::Window(new EmptyWindowDelegate));
-    mouse_event_target_->Init(aura::WINDOW_LAYER_NOT_DRAWN);
+    mouse_event_target_->Init(ui::LAYER_NOT_DRAWN);
 
     aura::Window* lock_background_container =
         GetContainer(kShellWindowId_LockScreenBackgroundContainer);
     lock_background_container->AddChild(mouse_event_target_.get());
     mouse_event_target_->Show();
   }
 
   // Create Docked windows layout manager
   aura::Window* docked_container = GetContainer(kShellWindowId_DockedContainer);
   docked_layout_manager_ =
@@ skipping 278 matching lines @@
   else
     DisableTouchHudProjection();
 }
 
 RootWindowController* GetRootWindowController(
     const aura::Window* root_window) {
   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
 }
 
 }  // namespace ash