Include-what-you-use for WrapUnique/MakeUnique.

ui/aura/mus/drag_drop_controller_mus.cc

 // Copyright 2016 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 "ui/aura/mus/drag_drop_controller_mus.h"
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/auto_reset.h"
+#include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "services/ui/public/interfaces/window_tree.mojom.h"
 #include "services/ui/public/interfaces/window_tree_constants.mojom.h"
 #include "ui/aura/client/drag_drop_delegate.h"
 #include "ui/aura/mus/drag_drop_controller_host.h"
 #include "ui/aura/mus/mus_types.h"
 #include "ui/aura/mus/os_exchange_data_provider_mus.h"
 #include "ui/aura/mus/window_mus.h"
 #include "ui/aura/window.h"
@@ skipping 182 matching lines @@
   std::unique_ptr<ui::DropTargetEvent> event =
       base::MakeUnique<ui::DropTargetEvent>(
           current_drag_state_ ? current_drag_state_->drag_data
                               : *(os_exchange_data_.get()),
           location, root_location, effect_bitmask);
   event->set_flags(event_flags);
   return event;
 }
 
 }  // namespace aura