aura: Remove layerless windows.

ash/wm/ash_focus_rules_unittest.cc

 // Copyright 2015 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/session/session_state_delegate.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/ash_test_helper.h"
 #include "ash/test/test_session_state_delegate.h"
@@ skipping 107 matching lines @@
 
   Shell* shell() const { return Shell::GetInstance(); }
 
  private:
   aura::Window* CreateWindowInContainer(int container_id) {
     aura::Window* root_window = Shell::GetPrimaryRootWindow();
     aura::Window* container = Shell::GetContainer(root_window, container_id);
     aura::Window* window = new aura::Window(nullptr);
     window->set_id(0);
     window->SetType(ui::wm::WINDOW_TYPE_NORMAL);
-    window->Init(aura::WINDOW_LAYER_TEXTURED);
+    window->Init(ui::LAYER_TEXTURED);
     window->Show();
 
     aura::client::ParentWindowWithContext(window, container,
                                           gfx::Rect(0, 0, 400, 400));
 
     window->SetProperty(aura::client::kCanMaximizeKey, true);
     window->SetProperty(aura::client::kCanMinimizeKey, true);
     return window;
   }
 
@@ skipping 42 matching lines @@
   EXPECT_FALSE(normal_window_state->IsMinimized());
   EXPECT_FALSE(always_on_top_window_state->IsMinimized());
   EXPECT_TRUE(normal_window_state->CanActivate());
   EXPECT_TRUE(always_on_top_window_state->CanActivate());
   EXPECT_FALSE(always_on_top_window->HasFocus());
   EXPECT_TRUE(normal_window->HasFocus());
 }
 
 }  // namespace test
 }  // namespace ash