Makes the launcher auto-hide for maximized windows. This turned out to

ash/wm/workspace/workspace_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_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_H_
 #define ASH_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_H_
 #pragma once
 
 #include "ash/wm/base_layout_manager.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/window_observer.h"
+#include "ui/base/ui_base_types.h"
 
 namespace aura {
 class MouseEvent;
 class RootWindow;
 class Window;
 }
 
 namespace gfx {
 class Rect;
 }
@@ skipping 16 matching lines @@
   }
 
   // Overridden from BaseLayoutManager:
   virtual void OnWindowResized() OVERRIDE;
   virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE;
   virtual void OnWillRemoveWindowFromLayout(aura::Window* child) OVERRIDE;
   virtual void OnChildWindowVisibilityChanged(aura::Window* child,
                                               bool visibile) OVERRIDE;
   virtual void SetChildBounds(aura::Window* child,
                               const gfx::Rect& requested_bounds) OVERRIDE;
-  virtual void OnRootWindowResized(const gfx::Size& new_size) OVERRIDE;
   virtual void OnMonitorWorkAreaInsetsChanged() OVERRIDE;
 
   // Overriden from aura::WindowObserver:
   virtual void OnWindowPropertyChanged(aura::Window* window,
                                        const void* key,
                                        intptr_t old) OVERRIDE;
 
  private:
+  void ShowStateChanged(
+      aura::Window* window,
+      ui::WindowShowState last_show_state);
+
   // Owned by WorkspaceController.
   WorkspaceManager* workspace_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkspaceLayoutManager);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_H_