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

chrome/browser/extensions/api/experience_sampling_private/experience_sampling.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 CHROME_BROWSER_EXTENSIONS_API_EXPERIENCE_SAMPLING_PRIVATE_EXPERIENCE_SAMPLING_H_
 #define CHROME_BROWSER_EXTENSIONS_API_EXPERIENCE_SAMPLING_PRIVATE_EXPERIENCE_SAMPLING_H_
 
 #include "base/macros.h"
 #include "chrome/common/extensions/api/experience_sampling_private.h"
 
@@ skipping 18 matching lines @@
 
   // String constants for event names.
   static const char kMaliciousDownload[];
   static const char kDangerousDownload[];
   static const char kDownloadDangerPrompt[];
   static const char kExtensionInstallDialog[];
 
   // The Create() functions can return an empty scoped_ptr if they cannot find
   // the BrowserContext. Code using them should check the scoped pointer using
   // scoped_ptr::get().
-  static scoped_ptr<ExperienceSamplingEvent> Create(
+  static std::unique_ptr<ExperienceSamplingEvent> Create(
       const std::string& element_name,
       const GURL& destination,
       const GURL& referrer);
 
-  static scoped_ptr<ExperienceSamplingEvent> Create(
+  static std::unique_ptr<ExperienceSamplingEvent> Create(
       const std::string& element_name);
 
   ExperienceSamplingEvent(const std::string& element_name,
                           const GURL& destination,
                           const GURL& referrer,
                           content::BrowserContext* browser_context);
   ~ExperienceSamplingEvent();
 
   // Sends an extension API event for the user seeing this event.
   void CreateOnDisplayedEvent();
@@ skipping 13 matching lines @@
   bool has_viewed_learn_more_;
   content::BrowserContext* browser_context_;
   UIElement ui_element_;
 
   DISALLOW_COPY_AND_ASSIGN(ExperienceSamplingEvent);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_EXPERIENCE_SAMPLING_PRIVATE_EXPERIENCE_SAMPLING_H_