Tweak sandbox profile
https://bugs.webkit.org/show_bug.cgi?id=106362
<rdar://problem/12884745>

Reviewed by Sam Weinig.

* WebProcess/com.apple.WebProcess.sb.in:
Allow access to com.apple.CoreServices.launchservicesd.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@139093 268f45cc-cd09-0410-ab3c-d52691b4dbfc