Convert //sync from scoped_ptr to std::unique_ptr

sync/internal_api/public/sync_manager_factory.h

Index: sync/internal_api/public/sync_manager_factory.h
diff --git a/sync/internal_api/public/sync_manager_factory.h b/sync/internal_api/public/sync_manager_factory.h
index feb9e8bd5a562a5c955a2614bac24a1ccc973862..7cb6826c53ab8b5dd0dea075d58db6dc8aa9e1e0 100644
--- a/sync/internal_api/public/sync_manager_factory.h
+++ b/sync/internal_api/public/sync_manager_factory.h
@@ -5,10 +5,10 @@
 #ifndef SYNC_INTERNAL_API_PUBLIC_SYNC_MANAGER_FACTORY_H_
 #define SYNC_INTERNAL_API_PUBLIC_SYNC_MANAGER_FACTORY_H_
 
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "sync/base/sync_export.h"
 
 namespace syncer {
@@ -21,7 +21,8 @@ class SYNC_EXPORT SyncManagerFactory {
   SyncManagerFactory();
   virtual ~SyncManagerFactory();
 
-  virtual scoped_ptr<SyncManager> CreateSyncManager(const std::string& name);
+  virtual std::unique_ptr<SyncManager> CreateSyncManager(
+      const std::string& name);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SyncManagerFactory);