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

chrome/browser/extensions/extension_test_notification_observer.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_EXTENSION_TEST_NOTIFICATION_OBSERVER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_TEST_NOTIFICATION_OBSERVER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 90 matching lines @@
   // Quits the message loop if |condition_| is met.
   void MaybeQuit();
 
   // extensions::ExtensionActionAPI::Observer:
   void OnPageActionsUpdated(content::WebContents* contents) override;
 
   Browser* browser_;
   Profile* profile_;
 
   content::NotificationRegistrar registrar_;
-  scoped_ptr<content::WindowedNotificationObserver> observer_;
+  std::unique_ptr<content::WindowedNotificationObserver> observer_;
 
   std::string last_loaded_extension_id_;
   int extension_installs_observed_;
   int extension_load_errors_observed_;
   int crx_installers_done_observed_;
 
   // The condition for which we are waiting. This should be checked in any
   // observing methods that could trigger it.
   base::Callback<bool(void)> condition_;
 
   // The closure to quit the currently-running message loop.
   base::Closure quit_closure_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_TEST_NOTIFICATION_OBSERVER_H_