mozilla/pdf.js — pull request #1743 by yurydelendik (2012-05-23 21:52:42+00:00)
Title: Add viewport metatag for mobile

IRC chat:

@@@
yury: right now you don't have a metaviewport tag, so we give you a window that 800 or 900px wide: https://developer.mozilla.org/en/Mobile/Viewport_meta_tag
..
yury: if you add one, you can control the size... kinda
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