Block UI events not to be sent to the WebProcess while js popup is displayed.
[Title] Block UI events not to be sent to the WebProcess while js popup is displayed.
[Issue#] N_SE-8944 / N_SE-8828 / N_SE-8867 / N_SE-8935 / N_SE-8935 (tizendev.org/bugs)
[Problem] UI Process is terminated when js popup is displayed.
[Cause] Not permitted IPC messages about user event (touch, mouse, guesture, keyboard)
can be sent to the WebProcess while js popup is displayed
[Solution] Add blocking code for the events while js popup is displayed.
[Developer] bw80.lee
Change-Id: Ieb7f91760db7c3a22389409b537064ce26d7b756