Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/api/webstore_widget_private/app_installer.h

 // Copyright 2013 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 CHROME_BROWSER_EXTENSIONS_API_WEBSTORE_WIDGET_PRIVATE_APP_INSTALLER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_WEBSTORE_WIDGET_PRIVATE_APP_INSTALLER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 23 matching lines @@
   ~AppInstaller() override;
 
   void OnWebContentsDestroyed(content::WebContents* web_contents);
 
   // WebstoreStandaloneInstaller implementation.
   bool CheckRequestorAlive() const override;
   const GURL& GetRequestorURL() const override;
   bool ShouldShowPostInstallUI() const override;
   bool ShouldShowAppInstalledBubble() const override;
   content::WebContents* GetWebContents() const override;
-  scoped_ptr<ExtensionInstallPrompt::Prompt> CreateInstallPrompt()
+  std::unique_ptr<ExtensionInstallPrompt::Prompt> CreateInstallPrompt()
       const override;
   bool CheckInlineInstallPermitted(const base::DictionaryValue& webstore_data,
                                    std::string* error) const override;
   bool CheckRequestorPermitted(const base::DictionaryValue& webstore_data,
                                std::string* error) const override;
 
  private:
   class WebContentsObserver;
 
   bool silent_installation_;
   Callback callback_;
   content::WebContents* web_contents_;
-  scoped_ptr<WebContentsObserver> web_contents_observer_;
+  std::unique_ptr<WebContentsObserver> web_contents_observer_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AppInstaller);
 };
 
 }  // namespace webstore_widget
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_WEBSTORE_WIDGET_PRIVATE_APP_INSTALLER_H_