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

chrome/browser/sync_file_system/drive_backend/callback_tracker_internal.h

Index: chrome/browser/sync_file_system/drive_backend/callback_tracker_internal.h
diff --git a/chrome/browser/sync_file_system/drive_backend/callback_tracker_internal.h b/chrome/browser/sync_file_system/drive_backend/callback_tracker_internal.h
index 4f8e445860940adfe56861401a1d0d5f43848790..e68c3d6efc09a330a156536c3fd586ba9e875457 100644
--- a/chrome/browser/sync_file_system/drive_backend/callback_tracker_internal.h
+++ b/chrome/browser/sync_file_system/drive_backend/callback_tracker_internal.h
@@ -5,11 +5,11 @@
 #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 {
@@ -25,7 +25,7 @@ class AbortHelper {
   ~AbortHelper();
   base::WeakPtr<AbortHelper> AsWeakPtr();
 
-  static scoped_ptr<AbortHelper> TakeOwnership(
+  static std::unique_ptr<AbortHelper> TakeOwnership(
       const base::WeakPtr<AbortHelper>& abort_helper);
 
  private:
@@ -43,7 +43,8 @@ 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)...);
     }