am 14e40f04: am fd117ff2: Doc change: zh-cn translation of Android L overviews. cherrypick from  I56d1ce58e10b83d10d0077cc9dfbeb04f090b861

* commit '14e40f042f17ae9e596ba6db7ff11c230796f193':
  Doc change: zh-cn translation of Android L overviews. cherrypick from  I56d1ce58e10b83d10d0077cc9dfbeb04f090b861