Bug 157174 [Viewers] Refactor new Viewer API
We are yet not completely happy with the API and refactor it.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ColumnViewer.java
*/
	protected ViewerColumn createColumnViewer(Widget columnOwner,
			ViewerLabelProvider labelProvider) {
		return new ViewerColumn(columnOwner, labelProvider);
	}
	/**
	 * Activate the tooltip support.
	 */
	public void activateCustomTooltips() {
		tooltipSupport.activate();
	}
	/**
	 * Deactivate the tooltip support.
	 */
	public void deactivateCustomTooltips() {
		tooltipSupport.deactivate();
	}
	/**
	 * Update the cached cell with the row and column.
	 * 
	 * @param rowPartFromItem
	 * @param column
	 * @return ViewerCell
	 */
	ViewerCell updateCell(ViewerRow rowItem, int column) {
		cell.update(rowItem, column);
		return cell;
	}
}