Replace scoped_ptr with std::unique_ptr in //ui

ui/ozone/platform/drm/gpu/hardware_display_plane_manager_atomic.cc

 // Copyright 2014 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/ozone/platform/drm/gpu/hardware_display_plane_manager_atomic.h"
 
 #include "base/bind.h"
 #include "ui/ozone/platform/drm/gpu/crtc_controller.h"
 #include "ui/ozone/platform/drm/gpu/drm_device.h"
 #include "ui/ozone/platform/drm/gpu/hardware_display_plane_atomic.h"
@@ skipping 87 matching lines @@
   if (!atomic_plane->SetPlaneData(plane_list->atomic_property_set.get(),
                                   crtc_id, overlay.buffer->GetFramebufferId(),
                                   overlay.display_bounds, src_rect)) {
     LOG(ERROR) << "Failed to set plane properties";
     return false;
   }
   atomic_plane->set_crtc(crtc);
   return true;
 }
 
-scoped_ptr<HardwareDisplayPlane> HardwareDisplayPlaneManagerAtomic::CreatePlane(
-    uint32_t plane_id,
-    uint32_t possible_crtcs) {
-  return scoped_ptr<HardwareDisplayPlane>(
+std::unique_ptr<HardwareDisplayPlane>
+HardwareDisplayPlaneManagerAtomic::CreatePlane(uint32_t plane_id,
+                                               uint32_t possible_crtcs) {
+  return std::unique_ptr<HardwareDisplayPlane>(
       new HardwareDisplayPlaneAtomic(plane_id, possible_crtcs));
 }
 
 }  // namespace ui