1 files changed, 4 insertions, 0 deletions
diff --git a/chromium/webkit/browser/fileapi/recursive_operation_delegate.h b/chromium/webkit/browser/fileapi/recursive_operation_delegate.h
index a5266777341..08e30507bce 100644
--- a/chromium/webkit/browser/fileapi/recursive_operation_delegate.h
+++ b/chromium/webkit/browser/fileapi/recursive_operation_delegate.h
@@ -115,6 +115,10 @@ class WEBKIT_STORAGE_BROWSER_EXPORT RecursiveOperationDelegate
 
   FileSystemOperationRunner* operation_runner();
 
+  // Called when Cancel() is called. This is a hook to do something more
+  // in a derived class. By default, do nothing.
+  virtual void OnCancel();
+
  private:
   void DidTryProcessFile(const FileSystemURL& root,
                          base::PlatformFileError error);