mozilla/pdf.js — pull request #5100 by Rob--W (2014-07-29 23:33:23+00:00)
Title: Load file:-URLs in the main thread.

QtWebKit does not support file:-URLs in Web Workers.
To solve this issue, I'm loading file:-URLs in the main thread for generic builds. file:-URLs load relatively quick, so there is no need for sophisticated load progress notifications.

Fixes #5057