Move MaximizeModeWindowManager to the controller

ash/wm/maximize_mode/maximize_mode_window_manager.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 ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_MANAGER_H_
 #define ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_MANAGER_H_
 
 #include <map>
 #include <set>
 
 #include "ash/ash_export.h"
 #include "ash/shell_observer.h"
 #include "ash/wm/window_state.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/aura/window_observer.h"
 #include "ui/events/event_handler.h"
 #include "ui/gfx/display_observer.h"
 
 namespace ui {
 class TouchEvent;
 }
 
 namespace ash {
+class MaximizeModeController;
 class MaximizeModeWindowState;
-class Shell;
 
 // A window manager which - when created - will force all windows into maximized
 // mode. Exception are panels and windows which cannot be maximized.
 // Windows which cannot be maximized / resized are centered with a layer placed
 // behind the window so that no other windows are visible and/or obscured.
 // With the destruction of the manager all windows will be restored to their
 // original state.
 class ASH_EXPORT MaximizeModeWindowManager : public aura::WindowObserver,
                                              public gfx::DisplayObserver,
                                              public ShellObserver,
@@ skipping 22 matching lines @@
   // gfx::DisplayObserver overrides:
   virtual void OnDisplayAdded(const gfx::Display& display) OVERRIDE;
   virtual void OnDisplayRemoved(const gfx::Display& display) OVERRIDE;
   virtual void OnDisplayMetricsChanged(const gfx::Display& display,
                                        uint32_t metrics) OVERRIDE;
 
   // ui::EventHandler override:
   virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
 
  protected:
-  friend class ash::Shell;
+  friend class MaximizeModeController;
 
   // The object should only be created by the ash::Shell.
   MaximizeModeWindowManager();
 
  private:
   typedef std::map<aura::Window*, MaximizeModeWindowState*> WindowToState;
 
   // Maximize all windows and restore their current state.
   void MaximizeAllWindows();
 
@@ skipping 37 matching lines @@
 
   // True if all backdrops are hidden.
   bool backdrops_hidden_;
 
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeWindowManager);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_MANAGER_H_