am 00e5c613: Merge "Improve thread safety of input mappers." into gingerbread

Merge commit '00e5c61366d3d3d62c259277823ea15a14f68ad4' into gingerbread-plus-aosp

* commit '00e5c61366d3d3d62c259277823ea15a14f68ad4':
  Improve thread safety of input mappers.