SyncFS: Introduce RemoteSyncOperationResolver for directory operation support

chrome/browser/sync_file_system/drive_file_sync_service.h

Index: chrome/browser/sync_file_system/drive_file_sync_service.h
diff --git a/chrome/browser/sync_file_system/drive_file_sync_service.h b/chrome/browser/sync_file_system/drive_file_sync_service.h
index 6bab9baa4f641f53b784c78a81105bb3762062b4..344d361992f829c53139ecf22c7941f44ee74d8a 100644
--- a/chrome/browser/sync_file_system/drive_file_sync_service.h
+++ b/chrome/browser/sync_file_system/drive_file_sync_service.h
@@ -199,18 +199,6 @@ class DriveFileSyncService
     LOCAL_SYNC_OPERATION_FAIL,
   };
 
-  enum RemoteSyncOperationType {
-    REMOTE_SYNC_OPERATION_ADD_FILE,
-    REMOTE_SYNC_OPERATION_UPDATE_FILE,
-    REMOTE_SYNC_OPERATION_DELETE_FILE,
-    REMOTE_SYNC_OPERATION_NONE,
-    REMOTE_SYNC_OPERATION_CONFLICT,
-    REMOTE_SYNC_OPERATION_RESOLVE_TO_LOCAL,
-    REMOTE_SYNC_OPERATION_RESOLVE_TO_REMOTE,
-    REMOTE_SYNC_OPERATION_DELETE_METADATA,
-    REMOTE_SYNC_OPERATION_FAIL,
-  };
-
   typedef base::Callback<void(const base::Time& time,
                               SyncStatusCode status)> UpdatedTimeCallback;
   typedef base::Callback<
@@ -339,11 +327,6 @@ class DriveFileSyncService
       SyncStatusCode status,
       const SyncFileMetadata& metadata,
       const FileChangeList& changes);
-  RemoteSyncOperationType ResolveRemoteSyncOperationType(
-      const FileChange& remote_file_change,
-      ProcessRemoteChangeParam* param,
-      const FileChangeList& local_changes,
-      bool missing_local_file);
   void DidResolveConflictToLocalChange(
       scoped_ptr<ProcessRemoteChangeParam> param,
       SyncStatusCode status);