Convert //ash from scoped_ptr to std::unique_ptr

ash/wm/toplevel_window_event_handler.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/wm/toplevel_window_event_handler.h"
 
 #include "ash/shell.h"
 #include "ash/wm/resize_shadow_controller.h"
 #include "ash/wm/window_resizer.h"
 #include "ash/wm/window_state.h"
@@ skipping 90 matching lines @@
 
   // WindowObserver overrides:
   void OnWindowDestroying(aura::Window* window) override;
 
   // WindowStateObserver overrides:
   void OnPreWindowStateTypeChange(wm::WindowState* window_state,
                                   wm::WindowStateType type) override;
 
  private:
   ToplevelWindowEventHandler* handler_;
-  scoped_ptr<WindowResizer> resizer_;
+  std::unique_ptr<WindowResizer> resizer_;
 
   // Whether ScopedWindowResizer grabbed capture.
   bool grabbed_capture_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedWindowResizer);
 };
 
 ToplevelWindowEventHandler::ScopedWindowResizer::ScopedWindowResizer(
     ToplevelWindowEventHandler* handler,
     WindowResizer* resizer)
@@ skipping 337 matching lines @@
 
   pre_drag_window_bounds_ = window->bounds();
   in_gesture_drag_ = (source == aura::client::WINDOW_MOVE_SOURCE_TOUCH);
   return true;
 }
 
 bool ToplevelWindowEventHandler::CompleteDrag(DragCompletionStatus status) {
   if (!window_resizer_)
     return false;
 
-  scoped_ptr<ScopedWindowResizer> resizer(window_resizer_.release());
+  std::unique_ptr<ScopedWindowResizer> resizer(window_resizer_.release());
   switch (status) {
     case DRAG_COMPLETE:
       resizer->resizer()->CompleteDrag();
       break;
     case DRAG_REVERT:
       resizer->resizer()->RevertDrag();
       break;
     case DRAG_RESIZER_WINDOW_DESTROYED:
       // We explicitly do not invoke RevertDrag() since that may do things to
       // WindowResizer::GetTarget() which was destroyed.
@@ skipping 148 matching lines @@
     default:
       NOTREACHED();
   }
 }
 
 void ToplevelWindowEventHandler::ResizerWindowDestroyed() {
   CompleteDrag(DRAG_RESIZER_WINDOW_DESTROYED);
 }
 
 }  // namespace ash