Convert Pass()→std::move() 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>
 
 #include "ash/accessibility_delegate.h"
 #include "ash/ash_switches.h"
 #include "ash/cancel_mode.h"
 #include "ash/metrics/user_metrics_recorder.h"
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/session_state_animator.h"
 #include "ash/wm/session_state_animator_impl.h"
@@ skipping 72 matching lines @@
       weak_ptr_factory_(this) {
   Shell::GetPrimaryRootWindow()->GetHost()->AddObserver(this);
 }
 
 LockStateController::~LockStateController() {
   Shell::GetPrimaryRootWindow()->GetHost()->RemoveObserver(this);
 }
 
 void LockStateController::SetDelegate(
     scoped_ptr<LockStateControllerDelegate> delegate) {
-  delegate_ = delegate.Pass();
+  delegate_ = std::move(delegate);
 }
 
 void LockStateController::AddObserver(LockStateObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void LockStateController::RemoveObserver(LockStateObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
@@ skipping 489 matching lines @@
   if (unlocked_properties_.get() &&
       unlocked_properties_->background_is_hidden) {
     animation_sequence->StartAnimation(
         SessionStateAnimator::DESKTOP_BACKGROUND,
         SessionStateAnimator::ANIMATION_FADE_OUT,
         speed);
   }
 }
 
 }  // namespace ash