Bug 153943 [Viewers] Rename new API, e.g. RowPart -> ViewerRow
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TooltipSupport.java
private Shell tip;
		private TooltipHideListener hideListener = new TooltipHideListener();
		private Timer timer = new Timer();
		
		/* (non-Javadoc)
		 * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
		 */
		public void handleEvent(Event event) {
			switch (event.type) {
			case SWT.Dispose:
				if( timer != null ) {
					timer.cancel();
				}
			case SWT.KeyDown:
			case SWT.MouseMove:
			case SWT.MouseDown:
				disposeTooltip(tip);
				break;
			case SWT.MouseHover:
				Point p = new Point(event.x, event.y);
				RowPart row = viewer.getRowPart(p);
				viewer.getControl().setToolTipText(""); 
				if (row != null) {
					popupTooltip(row, p);
				}
				break;
			}
		}
		
		/**