Use OnceCallback on Mojo interfaces in //ash

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 158 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::Closure callback) {
-  StartUnlockAnimationBeforeUIDestroyed(callback);
+void LockStateController::OnLockScreenHide(base::OnceClosure callback) {
+  StartUnlockAnimationBeforeUIDestroyed(std::move(callback));
 }
 
 void LockStateController::SetLockScreenDisplayedCallback(
     base::OnceClosure callback) {
   DCHECK(lock_screen_displayed_callback_.is_null());
   lock_screen_displayed_callback_ = std::move(callback);
 }
 
 void LockStateController::OnHostCloseRequested(
     const aura::WindowTreeHost* host) {
@@ skipping 221 matching lines @@
       animator_->BeginAnimationSequence(next_animation_starter);
 
   animation_sequence->StartAnimation(
       SessionStateAnimator::LOCK_SCREEN_CONTAINERS,
       SessionStateAnimator::ANIMATION_RAISE_TO_SCREEN,
       SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS);
   animation_sequence->EndSequence();
 }
 
 void LockStateController::StartUnlockAnimationBeforeUIDestroyed(
-    base::Closure& callback) {
+    base::OnceClosure callback) {
   VLOG(1) << "StartUnlockAnimationBeforeUIDestroyed";
   animator_->StartAnimationWithCallback(
       SessionStateAnimator::LOCK_SCREEN_CONTAINERS,
       SessionStateAnimator::ANIMATION_LIFT,
-      SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS, callback);
+      SessionStateAnimator::ANIMATION_SPEED_MOVE_WINDOWS, std::move(callback));
 }
 
 void LockStateController::StartUnlockAnimationAfterUIDestroyed() {
   VLOG(1) << "StartUnlockAnimationAfterUIDestroyed";
   base::Closure next_animation_starter =
       base::Bind(&LockStateController::UnlockAnimationAfterUIDestroyedFinished,
                  weak_ptr_factory_.GetWeakPtr());
   SessionStateAnimator::AnimationSequence* animation_sequence =
       animator_->BeginAnimationSequence(next_animation_starter);
 
@@ skipping 114 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