- There is 'Delete All' key of TV remote control
- If the user wants to 'Delete All' texts focused, then the primary cursor
has to be situated in the head of texts.
Change-Id: Id56e8dd1ba63130993ffc8a4332b5dd8a9e8c2de Signed-off-by: Seoyeon Kim <seoyeon2.kim@samsung.com>