Replace scoped_ptr with std::unique_ptr in //ui

ui/views_content_client/views_content_main_delegate.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_MAIN_DELEGATE_H_
 #define UI_VIEWS_CONTENT_CLIENT_VIEWS_CONTENT_MAIN_DELEGATE_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "content/public/app/content_main_delegate.h"
 #include "content/shell/common/shell_content_client.h"
 
 namespace ui {
 
 class ViewsContentBrowserClient;
 class ViewsContentClient;
 
 class ViewsContentMainDelegate : public content::ContentMainDelegate {
  public:
   explicit ViewsContentMainDelegate(ViewsContentClient* views_content_client);
   ~ViewsContentMainDelegate() override;
 
   // content::ContentMainDelegate implementation
   bool BasicStartupComplete(int* exit_code) override;
   void PreSandboxStartup() override;
   content::ContentBrowserClient* CreateContentBrowserClient() override;
 
  private:
-  scoped_ptr<ViewsContentBrowserClient> browser_client_;
+  std::unique_ptr<ViewsContentBrowserClient> browser_client_;
   content::ShellContentClient content_client_;
   ViewsContentClient* views_content_client_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewsContentMainDelegate);
 };
 
 }  // namespace ui
 
 #endif  // UI_VIEWS_CONTENT_CLIENT_VIEWS_CONTENT_MAIN_DELEGATE_H_