tree c010aa4e478c1d6fc9b78abf486a4725341ed86f
parent b9d4a67734f52c76d1e7472e59276f82f9ec3fb5
author Alex Deymo <deymo@google.com> 1459297413 -0700
committer Alex Deymo <deymo@google.com> 1459822469 -0700

Subprocess: Close all unused file descriptors.

This patch extends Subprocess::ExecFlags() method with a list of
file descriptors that should be kept open on the child process and
mapped to a pipe() in the parent. The remaining file descriptors
will be closed.

Bug: 27880754
TEST=Added unittests for this functionality.

Change-Id: Id96fb6a72f7805a0bfacfbc85422dc7d44750d93