Replace scoped_ptr with std::unique_ptr in //ui

ui/views/style/platform_style_linux.cc

 // Copyright 2015 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/views/style/platform_style.h"
 
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/button/label_button_border.h"
 #include "ui/views/linux_ui/linux_ui.h"
 
 namespace views {
 
 // static
-scoped_ptr<Border> PlatformStyle::CreateThemedLabelButtonBorder(
+std::unique_ptr<Border> PlatformStyle::CreateThemedLabelButtonBorder(
     LabelButton* button) {
   views::LinuxUI* linux_ui = views::LinuxUI::instance();
   if (linux_ui)
     return linux_ui->CreateNativeBorder(button, button->CreateDefaultBorder());
   return button->CreateDefaultBorder();
 }
 
 void PlatformStyle::ApplyLabelButtonTextStyle(Label* label,
                                               ButtonColorByState* colors) {
   // TODO(erg): This is disabled on desktop linux because of the binary asset
   // confusion. These details should either be pushed into ui::NativeThemeWin
   // or should be obsoleted by rendering buttons with paint calls instead of
   // with static assets. http://crbug.com/350498
 }
 
 }  // namespace views