ScrollIntoView Horizontal

BUG ID 3471901 support scrollIntoView method for DOM elements (3474)

STEPS TO TEST: Following the numbered steps on each button, click each button to scroll the next button into view.

TEST PASS: Next button scrolls into view as specified.

TEST FAIL: Next button does not scroll into view, or the button is scrolled to the wrong positon (top, bottom).

here is a big empty div

here is a big empty div