Bug 315050 [Automation][Regression]Image size is different from golden file when preview as xls
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/layout/ExcelLayoutEngine.java
{
		XlsTable table = tables.peek( );
		ContainerSizeInfo cellSizeInfo = table.getColumnSizeInfo( col, colSpan );
		XlsCell cell = new XlsCell( engine.createEntry( cellSizeInfo, style,
														getParentStyle( ) ),
				cellSizeInfo, getCurrentContainer( ), rowSpan );
		addContainer( cell );
	}
	private boolean isHidden( IContent content )
	{
		if ( content != null )
		{
			IStyle style = content.getStyle( );
			if ( IStyle.NONE_VALUE.equals( style
					.getProperty( IStyle.STYLE_DISPLAY ) ) )
			{
				return true;
			}
		}
		return false;
	}
	public void addCell( ICellContent cellcontent, int col, int colSpan,
			int rowSpan, IStyle style )
	{
		if ( !isHidden( cellcontent ) )
		{
			rowVisibilities.pop( );
			rowVisibilities.push( true );
			XlsTable table = tables.peek( );
			ContainerSizeInfo cellSizeInfo = table.getColumnSizeInfo( col,