aura: Remove layerless windows.

ash/wm/workspace/multi_window_resize_controller_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/wm/workspace/multi_window_resize_controller.h"
 
 #include "ash/ash_constants.h"
 #include "ash/frame/custom_frame_view_ash.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
@@ skipping 50 matching lines @@
         WorkspaceControllerTestHelper(wc).GetEventHandler();
     resize_controller_ = WorkspaceEventHandlerTestHelper(event_handler).
         resize_controller();
   }
 
  protected:
   aura::Window* CreateTestWindow(aura::WindowDelegate* delegate,
                                  const gfx::Rect& bounds) {
     aura::Window* window = new aura::Window(delegate);
     window->SetType(ui::wm::WINDOW_TYPE_NORMAL);
-    window->Init(aura::WINDOW_LAYER_TEXTURED);
+    window->Init(ui::LAYER_TEXTURED);
     ParentWindowInPrimaryRootWindow(window);
     window->SetBounds(bounds);
     window->Show();
     return window;
   }
 
   void ShowNow() {
     resize_controller_->ShowNow();
   }
 
@@ skipping 285 matching lines @@
 
   // Clicking outside the resize handle should immediately hide the resize
   // handle.
   EXPECT_FALSE(resize_widget_bounds_in_screen.Contains(w1_center_in_screen));
   generator.MoveMouseTo(w1_center_in_screen);
   generator.ClickLeftButton();
   EXPECT_FALSE(IsShowing());
 }
 
 }  // namespace ash