Viewport: Scroll - no page scale

Test Description: This test checks that window.visualViewport returns correct offset and scroll values without any pinch-zoom page scale applied.

window.visualViewport's offsetLeft and offsetTop is (0, 0).

window.visualViewport's pageLeft and pageTop is (1000, 1200).


PASS offsetLeft must be 0. 
PASS offsetTop must be 0. 
PASS pageLeft must reflect location of viewport in document. 
PASS pageTop must reflect location of viewport in document.