As part of a fix for ICE-9156, we modified the chat and showcase portlet examples to include listeners in the web.xml. This was done as per the recommendations outlined in http://issues.liferay.com/browse/FACES-1511:

{code}<!-- Specifying these listeners in this order as per http://issues.liferay.com/browse/FACES-1511 -->
<listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>

<listener>
    <listener-class>com.liferay.faces.bridge.servlet.BridgeSessionListener</listener-class>
</listener>{code}

The problem is that if a web.xml contains these listener declarations and the LiferayFaces Bridge is not present, the deployment will fail with errors about not being able to find the class. This can happen if the chat application is deployed directly to Tomcat or the Showcase Portlet application is deployed to Liferay but using the older PortletFaces Bridge.

We should create separate web.xml files for the chat and chat-portlet examples to help isolate the issue to portlet deployments only.