am 680ee91f: am 95d9bfd1: Clear voice search mode when changing search engines.

Merge commit '680ee91f725ac91a37791a4c57c7810c33e76e38' into gingerbread-plus-aosp

* commit '680ee91f725ac91a37791a4c57c7810c33e76e38':
  Clear voice search mode when changing search engines.