c1cba781d3
This makes the zoom animation much more smooth. With previous dynamic viewport, the animation jumps because of viewport adjustment and big screen. Also the viewport width is changed from 800 to 1040 to better suit the tablet device. It's the middle point of 1280 and 800. The text reflow re-alignment for non-double-tap zoom is disabled for tablet, since most of the time the reflow has no effect. issue: 2919307 Change-Id: I74493df6408291c24ef8511512d7ed0b81bf507a