mozilla-b2g/gaia — pull request #7970 by tdz (2013-02-05 17:32:53+00:00)
Title: Bug 836377: Optimize size of dialer app's PNG files

The optimized PNG files have been stripped from their metadata and
reencoded with minimal bit depth by running

optipng --strip -o7 *.png

The optimized PNG files are around 30-50% of the size of the original
one's.

Signed-off-by: Thomas Zimmermann