A MOZILLA_1_8_BRANCH-specific interface that adds the 'channel' attribute
 to the nsIUpdate interface. This attribute has been added to nsIUpdate on
 the trunk.
[scriptable, uuid(5b61356d-8411-48c0-863f-7b038eb0e4a8)]
interface nsIUpdate_MOZILLA_1_8_BRANCH : nsIUpdate

Attributes

 The channel used to retrieve this update from the Update Service.
attribute AString channel