aura: Remove layerless windows.

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/shell.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/ash_switches.h"
@@ skipping 427 matching lines @@
   // Clean up.
   widget->Close();
 }
 
 // Various assertions around SetShelfAutoHideBehavior() and
 // GetShelfAutoHideBehavior().
 TEST_F(ShellTest, ToggleAutoHide) {
   scoped_ptr<aura::Window> window(new aura::Window(NULL));
   window->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_NORMAL);
   window->SetType(ui::wm::WINDOW_TYPE_NORMAL);
-  window->Init(aura::WINDOW_LAYER_TEXTURED);
+  window->Init(ui::LAYER_TEXTURED);
   ParentWindowInPrimaryRootWindow(window.get());
   window->Show();
   wm::ActivateWindow(window.get());
 
   Shell* shell = Shell::GetInstance();
   aura::Window* root_window = Shell::GetPrimaryRootWindow();
   shell->SetShelfAutoHideBehavior(ash::SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS,
                                   root_window);
   EXPECT_EQ(ash::SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS,
             shell->GetShelfAutoHideBehavior(root_window));
@@ skipping 56 matching lines @@
 
  protected:
   scoped_ptr<aura::Window> window_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ShellTest2);
 };
 
 TEST_F(ShellTest2, DontCrashWhenWindowDeleted) {
   window_.reset(new aura::Window(NULL));
-  window_->Init(aura::WINDOW_LAYER_NOT_DRAWN);
+  window_->Init(ui::LAYER_NOT_DRAWN);
 }
 
 }  // namespace ash