Pass the least amount of info to CreateSocket and RandomBind.

CreateSocket just needs the address family for the new socket.
RandomBind just needs the (local) IP address; it will select a
port at random.

R=jar@chromium.org
BUG=none
TEST=none

Review URL: https://codereview.chromium.org/110163006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240315 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240315