Add missing video on API index page.

BUG=307351
R=kalman@chromium.org

Review URL: https://codereview.chromium.org/27470002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229026 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229026