Unreviewed follow-up to r143725, reduce chances test flakes on a slow box.

* src/js/Tests.js:
(.TestSuite.prototype.testPageOverlayUpdate.step2):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@143921 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Unreviewed. Edit my personal info.

    * Scripts/webkitpy/common/config/committers.py:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@143922 268f45cc-cd09-0410-ab3c-d52691b4dbfc