Merge "Add operator int() to unique_fd." am: c8e179c am: fabe534
am: 7f96883

* commit '7f9688385250fd5390871ae2370ce70b9205f82a':
  Add operator int() to unique_fd.

Change-Id: I2cd273b9d6349b1e03ad9c154c5f1c7feede2e2f