aura: Remove layerless windows.

ui/aura/demo/demo_main.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 "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/i18n/icu_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/power_monitor/power_monitor.h"
@@ skipping 138 matching lines @@
       test_screen->CreateHostForPrimaryDisplay());
   scoped_ptr<DemoWindowTreeClient> window_tree_client(
       new DemoWindowTreeClient(host->window()));
   aura::test::TestFocusClient focus_client;
   aura::client::SetFocusClient(host->window(), &focus_client);
 
   // Create a hierarchy of test windows.
   DemoWindowDelegate window_delegate1(SK_ColorBLUE);
   aura::Window window1(&window_delegate1);
   window1.set_id(1);
-  window1.Init(aura::WINDOW_LAYER_TEXTURED);
+  window1.Init(ui::LAYER_TEXTURED);
   window1.SetBounds(gfx::Rect(100, 100, 400, 400));
   window1.Show();
   aura::client::ParentWindowWithContext(&window1, host->window(), gfx::Rect());
 
   DemoWindowDelegate window_delegate2(SK_ColorRED);
   aura::Window window2(&window_delegate2);
   window2.set_id(2);
-  window2.Init(aura::WINDOW_LAYER_TEXTURED);
+  window2.Init(ui::LAYER_TEXTURED);
   window2.SetBounds(gfx::Rect(200, 200, 350, 350));
   window2.Show();
   aura::client::ParentWindowWithContext(&window2, host->window(), gfx::Rect());
 
   DemoWindowDelegate window_delegate3(SK_ColorGREEN);
   aura::Window window3(&window_delegate3);
   window3.set_id(3);
-  window3.Init(aura::WINDOW_LAYER_TEXTURED);
+  window3.Init(ui::LAYER_TEXTURED);
   window3.SetBounds(gfx::Rect(10, 10, 50, 50));
   window3.Show();
   window2.AddChild(&window3);
 
   host->Show();
   base::MessageLoopForUI::current()->Run();
 
   return 0;
 }
 
 }  // namespace
 
 int main(int argc, char** argv) {
   base::CommandLine::Init(argc, argv);
 
   // The exit manager is in charge of calling the dtors of singleton objects.
   base::AtExitManager exit_manager;
 
   base::i18n::InitializeICU();
 
   return DemoMain();
 }