Bug 174701 [Viewers] ViewerRow should be reused instead of connected to the Item
Currently we create a ViewerRow ver every Item we create this can degrade performance, we should cache the row and reuse it
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TreeViewerRow.java
public Rectangle getBounds() {
		return item.getBounds();
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ViewerRow#getColumnCount()
	 */
	public int getColumnCount() {
		return item.getParent().getColumnCount();
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ViewerRow#getItem()
	 */
	public Item getItem() {
		return item;
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ViewerRow#getBackground(int)
	 */
	public Color getBackground(int columnIndex) {
		return item.getBackground(columnIndex);
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ViewerRow#getFont(int)
	 */
	public Font getFont(int columnIndex) {
		return item.getFont(columnIndex);
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.viewers.ViewerRow#getForeground(int)
	 */