Revert 158513 - Maybe fix InstantTest.NewWindowDismissesInstant on Mac. The test still fails (see review thread for log link), even after the attempted fix, so revert it. See bug for possible true cause. BUG=152461 [email protected] TEST=none Review URL: https://chromiumcodereview.appspot.com/10984047 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@158869 0039d316-1c4b-4281-b951-d872f2087c98