Show the large handle upon first tap.

Show the large handle upon first tap.

Currently chromium-efl differs from chrome for android
as well as s-browser and firefox mobile in the way it
enters caret selection mode (i.e. large handle shown).
In some cases, user has to tap twice on an input field
in order to get the large handle shown.

Patch changes it so that only one tap is needed to enter
caret selection mode.
Additionally, patch unifies two routines used to handle
"tap" gestures.

Bug: http://107.108.218.239/bugzilla/show_bug.cgi?id=14617

Reviewed by: a.renevier, a1.gomes, sns.park

Change-Id: I595fdf531a1644a0179280a7b362984ec252f9c3
Signed-off-by: Antonio Gomes <a1.gomes@samsung.com>