chromeos: Move files in //ash/common to //ash, part 2

ash/common/wm/lock_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_COMMON_WM_LOCK_WINDOW_STATE_H_
-#define ASH_COMMON_WM_LOCK_WINDOW_STATE_H_
-
-#include "ash/common/wm/window_state.h"
-#include "base/macros.h"
-
-namespace ash {
-
-// The LockWindowState implementation which reduces all possible window
-// states to maximized (or normal if can't be maximized)/minimized/full-screen
-// and is applied only on lock (login) window container.
-// LockWindowState implements Ash behavior without state machine.
-class LockWindowState : public wm::WindowState::State {
- public:
-  // The |window|'s state object will be modified to use this new window mode
-  // state handler.
-  explicit LockWindowState(WmWindow* window);
-  ~LockWindowState() override;
-
-  // WindowState::State overrides:
-  void OnWMEvent(wm::WindowState* window_state,
-                 const wm::WMEvent* event) override;
-  wm::WindowStateType GetType() const override;
-  void AttachState(wm::WindowState* window_state,
-                   wm::WindowState::State* previous_state) override;
-  void DetachState(wm::WindowState* window_state) override;
-
-  // Creates new LockWindowState instance and attaches it to |window|.
-  static wm::WindowState* SetLockWindowState(WmWindow* window);
-
- private:
-  // Updates the window to |new_state_type| and resulting bounds:
-  // Either full screen, maximized centered or minimized. If the state does not
-  // change, only the bounds will be changed.
-  void UpdateWindow(wm::WindowState* window_state,
-                    wm::WindowStateType new_state_type);
-
-  // Depending on the capabilities of the window we either return
-  // |WINDOW_STATE_TYPE_MAXIMIZED| or |WINDOW_STATE_TYPE_NORMAL|.
-  wm::WindowStateType GetMaximizedOrCenteredWindowType(
-      wm::WindowState* window_state);
-
-  // Updates the bounds taking virtual keyboard bounds into consideration.
-  void UpdateBounds(wm::WindowState* window_state);
-
-  // 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_;
-
-  DISALLOW_COPY_AND_ASSIGN(LockWindowState);
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_WM_LOCK_WINDOW_STATE_H_