mash: Run pre-unlock animation via SessionController

ash/wm/lock_state_controller.cc

 // Copyright 2013 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.
 
 #include "ash/wm/lock_state_controller.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 157 matching lines @@
     shell->cursor_manager()->LockCursor();
   }
 
   animator_->StartAnimation(
       SessionStateAnimator::ROOT_CONTAINER,
       SessionStateAnimator::ANIMATION_GRAYSCALE_BRIGHTNESS,
       SessionStateAnimator::ANIMATION_SPEED_SHUTDOWN);
   StartRealShutdownTimer(true);
 }
 
-void LockStateController::OnLockScreenHide(
-    base::Callback<void(void)>& callback) {
+void LockStateController::OnLockScreenHide(base::Closure callback) {
   StartUnlockAnimationBeforeUIDestroyed(callback);
 }
 
 void LockStateController::SetLockScreenDisplayedCallback(
     const base::Closure& callback) {
   lock_screen_displayed_callback_ = callback;
 }
 
 void LockStateController::OnHostCloseRequested(
     const aura::WindowTreeHost* host) {
@@ skipping 362 matching lines @@
     SessionStateAnimator::AnimationSpeed speed,
     SessionStateAnimator::AnimationSequence* animation_sequence) {
   if (unlocked_properties_.get() && unlocked_properties_->wallpaper_is_hidden) {
     animation_sequence->StartAnimation(SessionStateAnimator::WALLPAPER,
                                        SessionStateAnimator::ANIMATION_FADE_OUT,
                                        speed);
   }
 }
 
 }  // namespace ash