Restore access to local files (issue #1249)

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1647 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
Mac: Change shutdown-related code to match Chromium (issue #1203)

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1648 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
Mac: Fix cefsimple shutdown problem when launching from Finder (issue #1203)

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1650 5089003a-bbd8-11dd-ad1f-f1f9622dbc98