saveState not saving current page size

[tringuyenminh92]

As i checked, $scope.gridApi.saveState.save() does not save current page size value and restore method doesn't restore previous page size value. So that i think there will be a wrong position scrollbar when:
_Call method to save current state of grid. (current page size in 100 and current position of scrollbar in row 47th)
_Change the page size (change to 20)
_Call method to restore the state
_The scrollbar will be shown in wrong position.