gtk/infobars: Refactor AnimateOpen/Open into a single Show() method.

This now matches with the Show() method in the views side.

BUG=None
TEST=None

R=pkasting@chromium.org,evan@chromium.org

Review URL: http://codereview.chromium.org/6932002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@84100 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed