am 13934c2d: Merge "Prevent SET_SCROLL_OFFSET spam from clogging tubes" into honeycomb

        // Rect.equals() checks for null input.

        if (!rect.equals(mLastVisibleRectSent)) {

            Point pos = new Point(rect.left, rect.top);

            mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET);

            mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET,

                    nativeMoveGeneration(), mUserScroll ? 1 : 0, pos);

            mLastVisibleRectSent = rect;