Revert of Remove remaining window states where window is shown with opacity 0.

ash/wm/panels/panel_layout_manager.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 ASH_WM_PANELS_PANEL_LAYOUT_MANAGER_H_
 #define ASH_WM_PANELS_PANEL_LAYOUT_MANAGER_H_
 
 #include <list>
 
 #include "ash/ash_export.h"
 #include "ash/display/display_controller.h"
 #include "ash/shelf/shelf_icon_observer.h"
 #include "ash/shelf/shelf_layout_manager_observer.h"
 #include "ash/shell_observer.h"
 #include "ash/wm/window_state_observer.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/aura/layout_manager.h"
-#include "ui/aura/window_observer.h"
 #include "ui/keyboard/keyboard_controller.h"
 #include "ui/keyboard/keyboard_controller_observer.h"
 #include "ui/wm/public/activation_change_observer.h"
 
 namespace aura {
 class Window;
 class WindowTracker;
 }
 
 namespace gfx {
@@ skipping 15 matching lines @@
 // added to that container.
 //
 // The constructor takes a |panel_container| argument which is expected to set
 // its layout manager to this instance, e.g.:
 // panel_container->SetLayoutManager(new PanelLayoutManager(panel_container));
 
 class ASH_EXPORT PanelLayoutManager
     : public aura::LayoutManager,
       public ShelfIconObserver,
       public ShellObserver,
-      public aura::WindowObserver,
-      public wm::WindowStateObserver,
       public aura::client::ActivationChangeObserver,
       public keyboard::KeyboardControllerObserver,
       public DisplayController::Observer,
-      public ShelfLayoutManagerObserver {
+      public ShelfLayoutManagerObserver,
+      public wm::WindowStateObserver {
  public:
   explicit PanelLayoutManager(aura::Window* panel_container);
   virtual ~PanelLayoutManager();
 
   // Call Shutdown() before deleting children of panel_container.
   void Shutdown();
 
   void StartDragging(aura::Window* panel);
   void FinishDragging();
 
@@ skipping 14 matching lines @@
                                               bool visibile) OVERRIDE;
   virtual void SetChildBounds(aura::Window* child,
                               const gfx::Rect& requested_bounds) OVERRIDE;
 
   // Overridden from ShelfIconObserver
   virtual void OnShelfIconPositionsChanged() OVERRIDE;
 
   // Overridden from ShellObserver
   virtual void OnShelfAlignmentChanged(aura::Window* root_window) OVERRIDE;
 
-  // Overridden from aura::WindowObserver
-  virtual void OnWindowPropertyChanged(aura::Window* window,
-                                       const void* key,
-                                       intptr_t old) OVERRIDE;
-
   // Overridden from ash::wm::WindowStateObserver
   virtual void OnPostWindowStateTypeChange(
       wm::WindowState* window_state,
       wm::WindowStateType old_type) OVERRIDE;
 
   // Overridden from aura::client::ActivationChangeObserver
   virtual void OnWindowActivated(aura::Window* gained_active,
                                  aura::Window* lost_active) OVERRIDE;
 
   // Overridden from DisplayController::Observer
@@ skipping 20 matching lines @@
     }
 
     // A weak pointer to the panel window.
     aura::Window* window;
     // The callout widget for this panel. This pointer must be managed
     // manually as this structure is used in a std::list. See
     // http://www.chromium.org/developers/smart-pointer-guidelines
     PanelCalloutWidget* callout_widget;
 
     // True on new and restored panel windows until the panel has been
-    // positioned. The first time Relayout is called the panel will be shown,
-    // and slide into position and this will be set to false.
+    // positioned. The first time Relayout is called the panel will slide into
+    // position and this will be set to false.
     bool slide_in;
   };
 
   typedef std::list<PanelInfo> PanelList;
 
   void MinimizePanel(aura::Window* panel);
   void RestorePanel(aura::Window* panel);
 
   // Called whenever the panel layout might change.
   void Relayout();
@@ skipping 33 matching lines @@
   // are currently focused.
   aura::Window* last_active_panel_;
   base::WeakPtrFactory<PanelLayoutManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PanelLayoutManager);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_PANELS_PANEL_LAYOUT_MANAGER_H_