Dismiss disambiguation popup when touch outside of it.

Dismiss disambiguation popup when touch outside of it.

When disambiguation popup gets shown, it is only possible
to dismiss it when clicking on the zoomed area. This differs
from s-browser, where clicking outside the zoomed dismiss it.

Patch implements the same for chromium-efl.

Original beta/m47 patch:
- http://165.213.202.130/gerrit/98592

Bug: http://107.108.218.239/bugzilla/show_bug.cgi?id=15238

Reviewed by: g.czajkowski

Change-Id: Ieff0a1ce0d4784d30036c2ec02bdc5ca6c7ddc9b
Signed-off-by: Antonio Gomes <a1.gomes@samsung.com>