Enable popup blocker tests.

Seems to have cured itself.

BUG=59208

Review URL: http://codereview.chromium.org/5713003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@68921 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/functional/PYAUTO_TESTS

@@ -53,7 +53,7 @@
     'passwords',
     'pdf',
     'plugins',
-    # 'popups',  crbug.com/59208
+    'popups',
     'prefs',
     'search_engines',
     'special_tabs',