Close all widnows even if there is no shelf

BUG=none
R=bshe@chromium.org

Review URL: https://codereview.chromium.org/53353002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232023 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232023
Process --ash-host-window-bounds first

BUG=none

Review URL: https://codereview.chromium.org/49713003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232024 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232024