50b1034d35
This is to eliminate false scrollEvent to webkit. And the side effect is that the history scroll position will be correctly restored; otherwise, webkit think there's user scrolled and not send back history scroll position. Particulary for NEW_PICTURE_MSG from webkit, the scroll event because of it are not user-scrolled. issue: 3063945 Change-Id: I9fdbfcb8baf07baf2331e2c4eed66f88aea744ef