implementing nsIPrompt in viewer test app to avoid assertions. all methods are no-ops. r=waterson (note, changes to viewer app require only one level of review) git-svn-id: svn://10.0.0.236/trunk@86804 18797224-902f-48f8-a5cc-f745e15eee43
implementing nsIPrompt in viewer test app to avoid assertions. all methods are no-ops. r=waterson (note, changes to viewer app require only one level of review) git-svn-id: svn://10.0.0.236/trunk@86804 18797224-902f-48f8-a5cc-f745e15eee43