CrOS DIAL - bind to both ethernet and wifi interfaces instead of just one of two. Chrome OS leaves WiFi active when Ethernet is in use.

BUG=335358

Review URL: https://codereview.chromium.org/135303007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246092 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246092