[net/dns] Hardcode DnsConfig.timeout to 1 second.

Currently, it is read from OS (if available) or set to 5 seconds (on Windows). In some cases the OS provides ridiculous values (30s on Mac). 

This change hard-codes the timeout to 1 second, which is the default used by getaddrinfo on Windows and Mac.

BUG=124437


Review URL: https://chromiumcodereview.appspot.com/10826212

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@151626 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed