aura: Enable drag/drop from the downloads tray.

BUG=120057
TEST=dragging files from downloads tray works.


Review URL: http://codereview.chromium.org/9856024

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@129057 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed