Web Inspector: get rid of source frame delegates for resources panel. SourceFrameDelegateForResourcesPanel and CSSSourceFrameDelegateForResourcesPanel are strange classes, we should get rid of them. Resources panel should use TextViewer configured with a domain-specific delegate to show/edit resource contents. See bug 57941.
Created attachment 88625 [details] Patch.
Committed r83438: <http://trac.webkit.org/changeset/83438>