* commit 'e264e1f046d6374577c8c474fb3a6d772e2ac0bf': Doc change: zh-cn translation of Android L overviews. cherrypick from I56d1ce58e10b83d10d0077cc9dfbeb04f090b861
* commit 'e264e1f046d6374577c8c474fb3a6d772e2ac0bf': Doc change: zh-cn translation of Android L overviews. cherrypick from I56d1ce58e10b83d10d0077cc9dfbeb04f090b861