Bug 179676 [regression]Error when report has chart in master page[05]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/presentation/LocalizedContentVisitor.java
String text = localize( foreignContent, key, null);
				if (text != null)
				{
					foreignContent.setRawValue(  text );
				}
			}
			return foreignContent;
		}
		
		if ( IForeignContent.VALUE_TYPE.equals( rawFormat ) )
		{
			handleOnRender( foreignContent );
			IDataContent dataContent = reportContent
					.createDataContent( foreignContent );
			dataContent.setValue( rawValue );
			processData( dataContent );
			return dataContent;
		}
		return foreignContent;
	}
	/**
	 * localzie the text.
	 * 
	 * @param key
	 *            text key
	 * @param text
	 *            default text
	 * @return localized text.
	 */
	private String localize( IContent content, String key, String text )