mozilla-b2g/gaia — pull request #15063 by lissyx (2014-01-07 12:18:23+00:00)
Title: Bug 956588 - Make sure that we pass a blob when setting wallpaper

Bug 943246 removed the checking on strings. Turns out that we do want
this. So we re-introduce this, and if the wallpaper is a data URI we
directly use it.