mozilla/pdf.js — pull request #2626 by wfwalker (2013-01-29 18:22:00+00:00)
Title: fix for #2219, "provide a better error message when file= not found/acce...

summary: create a new Exception class for missing PDF's, use it in place of generic

add new MissingPDFException to util.js
handle MissingPDF in api.js
handle MissingPDF in viewer.js, using new missing_file_error message
add new missing_file_error to l10n/en-US/viewer.properties
send MissingPDF from WorkerMessageHandler's loadDocument
send MissingPDF from GetDocRequest handler