Revert cross-origin auth prompt blocking.
BUG=174129

Review URL: https://chromiumcodereview.appspot.com/12183030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@181113 0039d316-1c4b-4281-b951-d872f2087c98
  LoginPromptBrowserTest()
      : bad_password_("incorrect"),
        bad_username_("nouser"),
        password_("secret"),
        username_basic_("basicuser"),
        username_digest_("digestuser") {
    auth_map_["foo"] = AuthInfo("testuser", "foopassword");
    auth_map_["bar"] = AuthInfo("testuser", "barpassword");
    auth_map_["testrealm"] = AuthInfo(username_basic_, password_);
  }

  LoginPromptBrowserTest()
      : bad_password_("incorrect"),
        bad_username_("nouser"),
        password_("secret"),
        username_basic_("basicuser"),
        username_digest_("digestuser") {
    auth_map_["foo"] = AuthInfo("testuser", "foopassword");
    auth_map_["bar"] = AuthInfo("testuser", "barpassword");
    auth_map_["testrealm"] = AuthInfo(username_basic_, password_);
  }
