GitLab

Allow keyboard and mouse navigation between the two while one is open.

BUG=none
TEST=the page and wrench menus feel like a native menubar

Review URL: http://codereview.chromium.org/155164

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20095 0039d316-1c4b-4281-b951-d872f2087c98