Moves a couple of the maximize mode classes to ash/common

ash/wm/maximize_mode/maximize_mode_window_state.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_STATE_H_
 #define ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_
 
 #include <memory>
 
 #include "ash/common/wm/window_state.h"
 #include "base/macros.h"
 
 namespace ash {
 class MaximizeModeWindowManager;
+class WmWindow;
 
 // The MaximizeModeWindowState implementation which reduces all possible window
 // states to minimized and maximized. If a window cannot be maximized it will be
 // set to normal. If a window cannot fill the entire workspace it will be
 // centered within the workspace.
 class MaximizeModeWindowState : public wm::WindowState::State {
  public:
   // Called when the window position might need to be updated.
   static void UpdateWindowPosition(wm::WindowState* window_state);
 
   // The |window|'s state object will be modified to use this new window mode
   // state handler. Upon destruction it will restore the previous state handler
   // and call |creator::WindowStateDestroyed()| to inform that the window mode
   // was reverted to the old window manager.
-  MaximizeModeWindowState(aura::Window* window,
-                          MaximizeModeWindowManager* creator);
+  MaximizeModeWindowState(WmWindow* window, MaximizeModeWindowManager* creator);
   ~MaximizeModeWindowState() override;
 
   // Leaves the maximize mode by reverting to previous state object.
   void LeaveMaximizeMode(wm::WindowState* window_state);
 
   // Sets whether to ignore bounds updates. If set to false, immediately does a
   // bounds update as the current window bounds may no longer be correct.
   void SetDeferBoundsUpdates(bool defer_bounds_updates);
 
   // WindowState::State overrides:
@@ skipping 20 matching lines @@
       wm::WindowState* window_state);
 
   // Updates the bounds to the maximum possible bounds according to the current
   // window state. If |animated| is set we animate the change.
   void UpdateBounds(wm::WindowState* window_state, bool animated);
 
   // The original state object of the window.
   std::unique_ptr<wm::WindowState::State> old_state_;
 
   // The state object for this object which owns this instance.
-  aura::Window* window_;
+  WmWindow* window_;
 
   // The creator which needs to be informed when this state goes away.
   MaximizeModeWindowManager* creator_;
 
   // The current state type. Due to the nature of this state, this can only be
   // WM_STATE_TYPE{NORMAL, MINIMIZED, MAXIMIZED}.
   wm::WindowStateType current_state_type_;
 
   // If true, do not update bounds.
   bool defer_bounds_updates_;
 
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeWindowState);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_