mozilla/pdf.js — pull request #2816 by Snuffleupagus (2013-02-26 16:51:41+00:00)
Title: Resize the zoom box width to fit the content - fix embedding

This PR is a follow-up of #2612, since that one break the zoom box if the viewer is embedded.
This patch fixes #2793, thanks @timvandermeij for reporting this issue.