Recover auto-drafts lost via Quick Draft.

Merges [28075] from the 3.8 to the 3.7 branch. See [28074].

fixes #27734.

Built from https://develop.svn.wordpress.org/branches/3.7@28077


git-svn-id: http://core.svn.wordpress.org/branches/3.7@27908 1a063a9b-81f0-0310-95a4-ce76da25c4cd