mozilla-b2g/gaia — pull request #7966 by gabrielesvelto (2013-02-05 13:33:52+00:00)
Title: Bug 822345 - Replace the network activity and system downloads animated GIFs with canvas elements animated via a timer callback

I've refreshed and re-tested the patch, this makes application installation quite smooth and significantly reduces CPU usage during other activities that make the network activity appear (browsing large web pages, streaming video or audio, etc...).