See InspectorApplicationCacheAgent::buildObjectForApplicationCacheResource in InspectorApplicationCacheAgent.cpp: http://trac.webkit.org/browser/trunk/WebCore/inspector/InspectorApplicationCacheAgent.cpp These Strings may need to be localized.
Closing as invalid, as this bug pertains to the old inspector UI and/or its tests. Please file a new bug (https://www.webkit.org/new-inspector-bug) if the bug/feature/issue is still relevant to WebKit trunk.