Enable testGotTimeline telemetry test for non-XP Windows platforms.

BUG=321529
TEST=test only seems to be flaky for XP

Review URL: https://codereview.chromium.org/118313003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241711 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241711