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

chrome/browser/sync_file_system/drive_backend/fake_sync_worker.h

Index: chrome/browser/sync_file_system/drive_backend/fake_sync_worker.h
diff --git a/chrome/browser/sync_file_system/drive_backend/fake_sync_worker.h b/chrome/browser/sync_file_system/drive_backend/fake_sync_worker.h
index f242d43a6b4773a533f1ae17493006cb93e20cbe..12295fd5c4e0e01a0a823b682082c30810af7109 100644
--- a/chrome/browser/sync_file_system/drive_backend/fake_sync_worker.h
+++ b/chrome/browser/sync_file_system/drive_backend/fake_sync_worker.h
@@ -6,11 +6,11 @@
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_FAKE_SYNC_WORKER_H_
 
 #include <map>
+#include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/sequence_checker.h"
 #include "chrome/browser/sync_file_system/drive_backend/sync_worker_interface.h"
@@ -52,7 +52,8 @@ class FakeSyncWorker : public SyncWorkerInterface {
   ~FakeSyncWorker() override;
 
   // SyncWorkerInterface overrides.
-  void Initialize(scoped_ptr<SyncEngineContext> sync_engine_context) override;
+  void Initialize(
+      std::unique_ptr<SyncEngineContext> sync_engine_context) override;
   void RegisterOrigin(const GURL& origin,
                       const SyncStatusCallback& callback) override;
   void EnableOrigin(const GURL& origin,
@@ -68,8 +69,8 @@ class FakeSyncWorker : public SyncWorkerInterface {
   RemoteServiceState GetCurrentState() const override;
   void GetOriginStatusMap(
       const RemoteFileSyncService::StatusMapCallback& callback) override;
-  scoped_ptr<base::ListValue> DumpFiles(const GURL& origin) override;
-  scoped_ptr<base::ListValue> DumpDatabase() override;
+  std::unique_ptr<base::ListValue> DumpFiles(const GURL& origin) override;
+  std::unique_ptr<base::ListValue> DumpDatabase() override;
   void SetSyncEnabled(bool enabled) override;
   void PromoteDemotedChanges(const base::Closure& callback) override;
   void ApplyLocalChange(const FileChange& local_change,
@@ -100,7 +101,7 @@ class FakeSyncWorker : public SyncWorkerInterface {
   bool sync_enabled_;
   StatusMap status_map_;
 
-  scoped_ptr<SyncEngineContext> sync_engine_context_;
+  std::unique_ptr<SyncEngineContext> sync_engine_context_;
 
   base::ObserverList<Observer> observers_;
   base::SequenceChecker sequence_checker_;