Add support for sockets that can listen and accept a connection.

These sockets allow one connection at a time, however clients can
connect and disconnect repeatedly.

These are going to be used by Cloud Print, Remoting and
Automation.

BUG=NONE
TEST=BUILD

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=69660

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=69690

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=69694

Review URL: http://codereview.chromium.org/5749001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@69696 0039d316-1c4b-4281-b951-d872f2087c98
12 files changed