AXObjectCache::m_document should be a reference.
Created attachment 211768 [details] Patch
Comment on attachment 211768 [details] Patch Attachment 211768 [details] did not pass efl-wk2-ews (efl-wk2): Output: http://webkit-queues.appspot.com/results/1852233
Comment on attachment 211768 [details] Patch Attachment 211768 [details] did not pass efl-ews (efl): Output: http://webkit-queues.appspot.com/results/1835145
Created attachment 211771 [details] Patch Fix ATK build.
Committed r155859: <http://trac.webkit.org/changeset/155859>