am 83c50ca7: Merge "Update ApiDemos CameraPreview activity to properly center the preview in cases where the camera hardware doesn\'t support a preview size with the same aspect ratio as the device display." into gingerbread

Merge commit '83c50ca740fabe25189601db90dc1f65ed4d2061' into gingerbread-plus-aosp

* commit '83c50ca740fabe25189601db90dc1f65ed4d2061':
  Update ApiDemos CameraPreview activity to properly center the preview in cases where the camera hardware doesn't support a preview size with the same aspect ratio as the device display.