Bug 199834 Enable access to IContent object in IReportItemPresentation layer
In IReportItemPresentation layer, the extended item may want to access properties from current IContent object, for example, bookmark, content style. So we need expose the content object in this layer.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/extension/ReportItemPresentationBase.java
{
		this.dpi = dpi;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.extension.IReportItemPresentation#setOutputFormat(java.lang.String)
	 */
	public void setOutputFormat( String outputFormat )
	{
		this.outputFormat = outputFormat;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.extension.IReportItemPresentation#setSupportedImageFormats(java.lang.String)
	 */
	public void setSupportedImageFormats( String supportedImageFormats )
	{
		this.supportedImageFormats = supportedImageFormats;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.extension.IReportItemPresentation#deserialize(java.io.InputStream)
	 */
	public void deserialize( InputStream istream )
	{
	}
	/*