Replace scoped_ptr with std::unique_ptr in //ui

ui/display/manager/display_layout.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/display/manager/display_layout.h"
 
 #include <algorithm>
 #include <set>
 #include <sstream>
 
@@ skipping 213 matching lines @@
                  << placement.ToString();
       return false;
     }
     has_primary_as_parent |= layout.primary_id == placement.parent_display_id;
   }
   if (!has_primary_as_parent)
     LOG(ERROR) << "At least, one placement must have the primary as a parent.";
   return has_primary_as_parent;
 }
 
-scoped_ptr<DisplayLayout> DisplayLayout::Copy() const {
-  scoped_ptr<DisplayLayout> copy(new DisplayLayout);
+std::unique_ptr<DisplayLayout> DisplayLayout::Copy() const {
+  std::unique_ptr<DisplayLayout> copy(new DisplayLayout);
   for (const auto& placement : placement_list)
     copy->placement_list.push_back(placement);
   copy->mirrored = mirrored;
   copy->default_unified = default_unified;
   copy->primary_id = primary_id;
   return copy;
 }
 
 bool DisplayLayout::HasSamePlacementList(const DisplayLayout& layout) const {
   if (placement_list.size() != layout.placement_list.size())
@@ skipping 89 matching lines @@
 
   gfx::Insets insets = target_display->GetWorkAreaInsets();
   target_display->set_bounds(
       gfx::Rect(new_target_origin, target_bounds.size()));
   target_display->UpdateWorkAreaFromInsets(insets);
 
   return old_bounds != target_display->bounds();
 }
 
 }  // namespace display