Subframes with no current HistoryItem should not prevent page-caching. We need one for the main frame as this is the key in the PageCache. However, there is no reason to require one for subframes. Frames do no have a current HistoryItem until something has been loaded in them.
rdar://problem/21614832
Created attachment 258210 [details] Patch
Comment on attachment 258210 [details] Patch Attachment 258210 [details] did not pass mac-ews (mac): Output: http://webkit-queues.webkit.org/results/16568 New failing tests: http/tests/navigation/page-cache-iframe-no-current-historyItem.html
Created attachment 258215 [details] Archive of layout-test-results from ews102 for mac-mavericks The attached test failures were seen while running run-webkit-tests on the mac-ews. Bot: ews102 Port: mac-mavericks Platform: Mac OS X 10.9.5
Comment on attachment 258210 [details] Patch Looks like the new test is failing on mac-ews
Created attachment 258221 [details] Patch
Comment on attachment 258221 [details] Patch Clearing flags on attachment: 258221 Committed r187921: <http://trac.webkit.org/changeset/187921>
All reviewed patches have been landed. Closing bug.