* commit 'be8da57a33103f9257d1a23eee372a703d8c181a': Doc change: zh-cn translation of Android L overviews. cherrypick from I56d1ce58e10b83d10d0077cc9dfbeb04f090b861
* commit 'be8da57a33103f9257d1a23eee372a703d8c181a': Doc change: zh-cn translation of Android L overviews. cherrypick from I56d1ce58e10b83d10d0077cc9dfbeb04f090b861