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

chrome/browser/sync_file_system/drive_backend/callback_tracker_internal.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_SYNC_FILE_SYSTEM_DRIVE_BACKEND_CALLBACK_TRACKER_INTERNAL_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_CALLBACK_TRACKER_INTERNAL_H_
 
+#include <memory>
 #include <utility>
 
 #include "base/callback.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 
 namespace sync_file_system {
 namespace drive_backend {
 
 class CallbackTracker;
 
 namespace internal {
 
 class AbortHelper {
  public:
   explicit AbortHelper(CallbackTracker* tracker);
   ~AbortHelper();
   base::WeakPtr<AbortHelper> AsWeakPtr();
 
-  static scoped_ptr<AbortHelper> TakeOwnership(
+  static std::unique_ptr<AbortHelper> TakeOwnership(
       const base::WeakPtr<AbortHelper>& abort_helper);
 
  private:
   CallbackTracker* tracker_;  // Not owned.
   base::WeakPtrFactory<AbortHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AbortHelper);
 };
 
 template <typename>
 struct InvokeAndInvalidateHelper;
 
 template <typename... Args>
 struct InvokeAndInvalidateHelper<void(Args...)> {
   static void Run(const base::WeakPtr<AbortHelper>& abort_helper,
                   const base::Callback<void(Args...)>& callback,
                   Args... args) {
-    scoped_ptr<AbortHelper> deleter = AbortHelper::TakeOwnership(abort_helper);
+    std::unique_ptr<AbortHelper> deleter =
+        AbortHelper::TakeOwnership(abort_helper);
     if (deleter) {
       callback.Run(std::forward<Args>(args)...);
     }
   }
 };
 
 }  // namespace internal
 }  // namespace drive_backend
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_CALLBACK_TRACKER_INTERNAL_H_