Change behaviour of the Alt-] and Alt-[ keys so that it cycles through SnapLeft/SnapRight to DockLe…

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"
@@ skipping 85 matching lines @@
 
   // 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 OnPreWindowStateTypeChange(
+      wm::WindowState* window_state,
+      wm::WindowStateType old_type) OVERRIDE;
+
   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
   virtual void OnDisplayConfigurationChanged() OVERRIDE;
@@ skipping 76 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_