Fix: Selection handle behavior in scrolled TextView.

When dragging a selection handle, it moves to strange position in
scrolled TextView because scroll position isn't took into account.
This issue was introduced by rebase mistaking in
I2a7e87ad08416f4bd01a5f6.

Bug: 28008281
Change-Id: I6217483fcc0b9a7e661f02a1f276114ddd5031a4
1 file changed