Layout Test inspector/extensions/extensions-events.html is timing out
https://bugs.webkit.org/show_bug.cgi?id=72966

Unreviewed gardening.

* platform/chromium/test_expectations.txt:

git-svn-id: svn://svn.chromium.org/blink/trunk@101010 bbb929c8-8fbe-4397-9dbb-9b2b20218538