convert //headless to std::unique_ptr

headless/lib/browser/headless_web_contents_impl.h

 // 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.
 
 #ifndef HEADLESS_LIB_BROWSER_HEADLESS_WEB_CONTENTS_IMPL_H_
 #define HEADLESS_LIB_BROWSER_HEADLESS_WEB_CONTENTS_IMPL_H_
 
 #include "headless/public/headless_web_contents.h"
 
+#include <memory>
 #include <unordered_map>
 
 namespace aura {
 class Window;
 }
 
 namespace content {
 class WebContents;
 class BrowserContext;
 }
@@ skipping 17 matching lines @@
   content::WebContents* web_contents() const;
 
  private:
   friend class HeadlessBrowserImpl;
 
   HeadlessWebContentsImpl(content::BrowserContext* context,
                           aura::Window* parent_window,
                           const gfx::Size& initial_size);
 
   class Delegate;
-  scoped_ptr<Delegate> web_contents_delegate_;
-  scoped_ptr<content::WebContents> web_contents_;
+  std::unique_ptr<Delegate> web_contents_delegate_;
+  std::unique_ptr<content::WebContents> web_contents_;
 
   using ObserverMap =
       std::unordered_map<HeadlessWebContents::Observer*,
-                         scoped_ptr<WebContentsObserverAdapter>>;
+                         std::unique_ptr<WebContentsObserverAdapter>>;
   ObserverMap observer_map_;
 
   DISALLOW_COPY_AND_ASSIGN(HeadlessWebContentsImpl);
 };
 
 }  // namespace headless
 
 #endif  // HEADLESS_LIB_BROWSER_HEADLESS_WEB_CONTENTS_IMPL_H_