Convert //ash from scoped_ptr to std::unique_ptr

ash/drag_drop/drag_drop_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/drag_drop/drag_drop_controller.h"
 
 #include <utility>
 
 #include "ash/drag_drop/drag_drop_tracker.h"
 #include "ash/drag_drop/drag_image_view.h"
@@ skipping 354 matching lines @@
     event->StopPropagation();
     return;
   }
 
   aura::Window* translated_target = drag_drop_tracker_->GetTarget(*event);
   if (!translated_target) {
     DragCancel();
     event->StopPropagation();
     return;
   }
-  scoped_ptr<ui::LocatedEvent> translated_event(
+  std::unique_ptr<ui::LocatedEvent> translated_event(
       drag_drop_tracker_->ConvertEvent(translated_target, *event));
   switch (translated_event->type()) {
     case ui::ET_MOUSE_DRAGGED:
       DragUpdate(translated_target, *translated_event.get());
       break;
     case ui::ET_MOUSE_RELEASED:
       Drop(translated_target, *translated_event.get());
       break;
     default:
       // We could also reach here because RootWindow may sometimes generate a
@@ skipping 47 matching lines @@
   touch_offset_event.set_location_f(touch_offset_location);
   touch_offset_event.set_root_location_f(touch_offset_root_location);
 
   aura::Window* translated_target =
       drag_drop_tracker_->GetTarget(touch_offset_event);
   if (!translated_target) {
     DragCancel();
     event->SetHandled();
     return;
   }
-  scoped_ptr<ui::LocatedEvent> translated_event(
+  std::unique_ptr<ui::LocatedEvent> translated_event(
       drag_drop_tracker_->ConvertEvent(translated_target, touch_offset_event));
 
   switch (event->type()) {
     case ui::ET_GESTURE_SCROLL_UPDATE:
       DragUpdate(translated_target, *translated_event.get());
       break;
     case ui::ET_GESTURE_SCROLL_END:
     case ui::ET_SCROLL_FLING_START:
       Drop(translated_target, *translated_event.get());
       break;
@@ skipping 106 matching lines @@
   drag_source_window_ = NULL;
 }
 
 void DragDropController::Cleanup() {
   if (drag_window_)
     drag_window_->RemoveObserver(this);
   drag_window_ = NULL;
   drag_data_ = NULL;
   // Cleanup can be called again while deleting DragDropTracker, so delete
   // the pointer with a local variable to avoid double free.
-  scoped_ptr<ash::DragDropTracker> holder = std::move(drag_drop_tracker_);
+  std::unique_ptr<ash::DragDropTracker> holder = std::move(drag_drop_tracker_);
 }
 
 }  // namespace ash