Flush the backing store (if any) to disk. If |callback| is non-NULL it will be executed asnychronously on the UI thread after the flush is complete. Returns false (0) if cookies cannot be accessed.
See Implementation
Flush the backing store (if any) to disk. If |callback| is non-NULL it will be executed asnychronously on the UI thread after the flush is complete. Returns false (0) if cookies cannot be accessed.