Index: chrome/browser/chromeos/gdata/gdata_file_system_interface.h |
diff --git a/chrome/browser/chromeos/gdata/gdata_file_system_interface.h b/chrome/browser/chromeos/gdata/gdata_file_system_interface.h |
index 0afd9f43f280459b1dfab9be1aa3435094f4d3bd..339f96b02518a3d188b474d61bb2aea71dcec4c9 100644 |
--- a/chrome/browser/chromeos/gdata/gdata_file_system_interface.h |
+++ b/chrome/browser/chromeos/gdata/gdata_file_system_interface.h |
@@ -199,6 +199,7 @@ class GDataFileSystemInterface { |
// of the file system. |
// |
// Can be called from UI/IO thread. |callback| is run on the calling thread. |
+ // |callback| must not be null. |
virtual void Copy(const FilePath& src_file_path, |
const FilePath& dest_file_path, |
const FileOperationCallback& callback) = 0; |