Replace scoped_ptr with std::unique_ptr in //ui

ui/views_content_client/views_content_client_main_parts_aura.h

 // 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.
 
 #ifndef UI_VIEWS_CONTENT_CLIENT_VIEWS_CONTENT_CLIENT_MAIN_PARTS_AURA_H_
 #define UI_VIEWS_CONTENT_CLIENT_VIEWS_CONTENT_CLIENT_MAIN_PARTS_AURA_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/views_content_client/views_content_client_main_parts.h"
 
 namespace wm {
 class WMState;
 }
 
 namespace ui {
 
 class ViewsContentClientMainPartsAura : public ViewsContentClientMainParts {
  protected:
   ViewsContentClientMainPartsAura(
       const content::MainFunctionParams& content_params,
       ViewsContentClient* views_content_client);
   ~ViewsContentClientMainPartsAura() override;
 
   // content::BrowserMainParts:
   void ToolkitInitialized() override;
   void PostMainMessageLoopRun() override;
 
  private:
-  scoped_ptr< ::wm::WMState> wm_state_;
+  std::unique_ptr<::wm::WMState> wm_state_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewsContentClientMainPartsAura);
 };
 
 }  // namespace ui
 
 #endif  // UI_VIEWS_CONTENT_CLIENT_VIEWS_CONTENT_CLIENT_MAIN_PARTS_AURA_H_