"Tests the Timeline API instrumentation of a paint event" This doesn't result in any output on Windows. Skipping the test, until someone investigates. dydz says he'd have a look soon.
<rdar://problem/7962794>
Closing as invalid, as this bug pertains to the old inspector UI and/or its tests. Please file a new bug (https://www.webkit.org/new-inspector-bug) if the bug/feature/issue is still relevant to WebKit trunk.