am 51654b56: am a6309c30: On BACK in search, hide just IME if IME is fullscreen

Merge commit '51654b562b3faaf358b55124ad5290847bdceabd'

* commit '51654b562b3faaf358b55124ad5290847bdceabd':
  On BACK in search, hide just IME if IME is fullscreen