Fix not showing timer's text on inactive tracks. (#2193)
Fix not showing timer's text on inactive tracks. (#2193)

A timer's text slice is currently only drawn on expanded tracks
(for ThreadTracks). However, tracks having just one depth of
timers are not "expanded", but "inactive". Thus, the check needs
to be "not collapsed".

Test: Take a capture with one function hooked.
Bug: http://b/185362423
google/orbit,google/orbit,google/orbit,google/orbit