aura: Remove layerless windows.

ui/views/widget/widget.h

 // 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.
 
 #ifndef UI_VIEWS_WIDGET_WIDGET_H_
 #define UI_VIEWS_WIDGET_WIDGET_H_
 
 #include <set>
 #include <stack>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/scoped_observer.h"
-#include "ui/aura/window_layer_type.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/events/event_source.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/native_theme/native_theme_observer.h"
 #include "ui/views/focus/focus_manager.h"
 #include "ui/views/widget/native_widget_delegate.h"
 #include "ui/views/window/client_view.h"
 #include "ui/views/window/non_client_view.h"
 
@@ skipping 215 matching lines @@
     gfx::Rect bounds;
     // When set, this value is used as the Widget's NativeWidget implementation.
     // The Widget will not construct a default one. Default is NULL.
     NativeWidget* native_widget;
     // Aura-only. Provides a DesktopWindowTreeHost implementation to use instead
     // of the default one.
     // TODO(beng): Figure out if there's a better way to expose this, e.g. get
     // rid of NW subclasses and do this all via message handling.
     DesktopWindowTreeHost* desktop_window_tree_host;
     // Only used by NativeWidgetAura. Specifies the type of layer for the
-    // aura::Window. Default is WINDOW_LAYER_TEXTURED.
-    aura::WindowLayerType layer_type;
+    // aura::Window. Default is ui::LAYER_TEXTURED.
+    ui::LayerType layer_type;
     // Only used by Aura. Provides a context window whose RootWindow is
     // consulted during widget creation to determine where in the Window
     // hierarchy this widget should be placed. (This is separate from |parent|;
     // if you pass a RootWindow to |parent|, your window will be parented to
     // |parent|. If you pass a RootWindow to |context|, we ask that RootWindow
     // where it wants your window placed.) NULL is not allowed if you are using
     // aura.
     gfx::NativeWindow context;
     // If true, forces the window to be shown in the taskbar, even for window
     // types that do not appear in the taskbar by default (popup and bubble).
@@ skipping 716 matching lines @@
   bool movement_disabled_;
 
   ScopedObserver<ui::NativeTheme, ui::NativeThemeObserver> observer_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(Widget);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_WIDGET_H_