chromeos: converts WindowState to aura::Window

ash/wm/lock_window_state.h

Index: ash/wm/lock_window_state.h
diff --git a/ash/wm/lock_window_state.h b/ash/wm/lock_window_state.h
index 9a164ca87a514c5964d0737748cd58f71ce07cb1..71de81bd984fd2a13024d25411c107e297ee6852 100644
--- a/ash/wm/lock_window_state.h
+++ b/ash/wm/lock_window_state.h
@@ -18,7 +18,7 @@ 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);
+  explicit LockWindowState(aura::Window* window);
   ~LockWindowState() override;
 
   // WindowState::State overrides:
@@ -30,7 +30,7 @@ class LockWindowState : public wm::WindowState::State {
   void DetachState(wm::WindowState* window_state) override;
 
   // Creates new LockWindowState instance and attaches it to |window|.
-  static wm::WindowState* SetLockWindowState(WmWindow* window);
+  static wm::WindowState* SetLockWindowState(aura::Window* window);
 
  private:
   // Updates the window to |new_state_type| and resulting bounds: