Convert //ash from scoped_ptr to std::unique_ptr

ash/magnifier/magnification_controller.cc

 // Copyright (c) 2012 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/magnifier/magnification_controller.h"
 
+#include <memory>
 #include <utility>
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/accessibility_delegate.h"
 #include "ash/ash_switches.h"
 #include "ash/display/root_window_transformers.h"
 #include "ash/host/ash_window_tree_host.h"
 #include "ash/host/root_window_transformer.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_util.h"
@@ skipping 349 matching lines @@
       root_window_->layer()->GetAnimator());
   settings.AddObserver(this);
   settings.SetPreemptionStrategy(
       ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
   settings.SetTweenType(tween_type);
   settings.SetTransitionDuration(
       base::TimeDelta::FromMilliseconds(duration_in_ms));
 
   gfx::Display display =
       gfx::Screen::GetScreen()->GetDisplayNearestWindow(root_window_);
-  scoped_ptr<RootWindowTransformer> transformer(
+  std::unique_ptr<RootWindowTransformer> transformer(
       CreateRootWindowTransformerForDisplay(root_window_, display));
   GetRootWindowController(root_window_)
       ->ash_host()
       ->SetRootWindowTransformer(std::move(transformer));
 
   if (duration_in_ms > 0)
     is_on_animation_ = true;
 
   return true;
 }
@@ skipping 466 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // MagnificationController:
 
 // static
 MagnificationController* MagnificationController::CreateInstance() {
   return new MagnificationControllerImpl();
 }
 
 }  // namespace ash