UISourceCode is now representing editable file in inspector. It does not always have an associated resource also. Moving revisions support to UISourceCode seems natural. Patch to follow.
Created attachment 151477 [details] Patch
Committed r122327: <http://trac.webkit.org/changeset/122327>
This test fails on Lion and Qt. * http/tests/inspector/network/network-request-revision-content.html I created new bug report: bug 90979