Bug 194371 Use page emitter framework to implement ppt emitter.
In order to keep consistent with pdf and postscript, ppt need to use page emitter framework.
engine/org.eclipse.birt.report.engine.emitter.ppt/src/org/eclipse/birt/report/engine/emitter/ppt/PPTEmitter.java
}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.emitter.IContentEmitter#startList(org.eclipse.birt.report.engine.content.IListContent)
	 */
	public void startList( IListContent list )
	{
		return;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.emitter.IContentEmitter#startListBand(org.eclipse.birt.report.engine.content.IListBandContent)
	 */
	public void startListBand( IListBandContent listBand )
	{
		return;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.emitter.IContentEmitter#startRow(org.eclipse.birt.report.engine.content.IRowContent)
	 */
	public void startRow( IRowContent row )
	{
		return;
	}
	/*
	 * (non-Javadoc)