The xml has:

<histogram name="Drive.SearchMetadataTime" units="microseconds">
  <owner>joshwoodward@google.com</owner>
  <summary>
    Time spent to perform an incremental search for auto completion of files on
    Drive. This time is collected for every partial query the user types for
    auto completion.  For instance, if the user types &quot;faq&quot;,
    incremental searches are performed for &quot;f&quot;, &quot;fa&quot;, and
    &quot;faq&quot; respectively.
  </summary>
</histogram>

However the data is measured in milliseconds, not microseconds.

This should be corrected