Convert layout test resource PNGs to sRGB. Some tests, such as

Convert layout test resource PNGs to sRGB. Some tests, such as
compositing/color-matching/image-color-matching.html, expect that
images with an RGB profile will not be altered when displayed. However,
some of the resources have RGB profiles that are different from sRGB
and actually should change when displayed with color profile support.

https://bugs.webkit.org/show_bug.cgi?id=83799

Patch by Tony Payne <tpayne@chromium.org> on 2012-04-12
Reviewed by Adam Barth.

* compositing/resources/thiswayup.png:
* css3/filters/resources/reference.png:
* fast/media/resources/apple_logo_half_size.png:
* fast/reflections/resources/kate.png:
* svg/as-border-image/resources/large-tiles.png:
* svg/custom/resources/green-checker.png:
* svg/custom/resources/red-checker.png:
* svg/wicd/resources/test-svg-child-object-rightsizing.png:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114056 268f45cc-cd09-0410-ab3c-d52691b4dbfc