athena: Fix window-layout in split-view mode.

athena/wm/window_manager_impl.h

 // Copyright 2014 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 ATHENA_WM_WINDOW_MANAGER_IMPL_H_
 #define ATHENA_WM_WINDOW_MANAGER_IMPL_H_
 
 #include "athena/input/public/accelerator_manager.h"
 #include "athena/wm/public/window_manager.h"
 #include "athena/wm/title_drag_controller.h"
@@ skipping 16 matching lines @@
 
 class WindowManagerImpl : public WindowManager,
                           public WindowOverviewModeDelegate,
                           public aura::WindowObserver,
                           public AcceleratorHandler,
                           public TitleDragControllerDelegate {
  public:
   WindowManagerImpl();
   virtual ~WindowManagerImpl();
 
-  void Layout();
-
   // WindowManager:
   virtual void ToggleOverview() OVERRIDE;
   virtual bool IsOverviewModeActive() OVERRIDE;
 
  private:
   friend class WindowManagerImplTestApi;
+  friend class AthenaContainerLayoutManager;
 
   enum Command {
     CMD_TOGGLE_OVERVIEW,
   };
 
   // Sets whether overview mode is active.
   void SetInOverview(bool active);
 
   void InstallAccelerators();
 
@@ skipping 30 matching lines @@
   scoped_ptr<TitleDragController> title_drag_controller_;
   scoped_ptr<wm::ShadowController> shadow_controller_;
   ObserverList<WindowManagerObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManagerImpl);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_WM_WINDOW_MANAGER_IMPL_H_