The following lossless PNG crunchers were used:

- AdvPNG
- OptiPNG
- PNGCrush
- PNGOUT

Total savings: 1.001.550 bytes, i.e. almost 1 MB.

Patch from Mathias Bynens <mathias@qiwi.be>
BUG=chromium:92525
TEST=none

Review URL: http://codereview.chromium.org/7638001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96786 0039d316-1c4b-4281-b951-d872f2087c98