GitLab

Provide a command line flag that can accept a list or range of resolution IP
address (such as those for a known CDN), and place an alternative resolution
at the start of the resolution list (driving towrads a test server).

r=wtc
BUG=342116

Review URL: https://codereview.chromium.org/156963003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252289 0039d316-1c4b-4281-b951-d872f2087c98