UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

Steps to reproduce the problem:
1. open chrome://media-engagement/
2. sort by "Is High" tab in table

What is the expected behavior?
The "Is High" table column gets sorted.

What went wrong?
Everything in the table disappears.

Did this work before? N/A 

Chrome version: 66.0.3359.181  Channel: n/a
OS Version: 10.0
Flash Version: 

Javascript error:
util.js:27 Uncaught Error: Assertion failed: Unsupported sort key: isHigh
    at assert (util.js:27)
    at assertNotReached (util.js:60)
    at compareTableItem (media-engagement.js:87)
    at info.sort (media-engagement.js:60)
    at Array.sort (chrome://media-engagement/native)
    at sortInfo (media-engagement.js:59)
    at renderTable (media-engagement.js:126)
    at HTMLTableCellElement.headers.(chrome://media-engagement/anonymous function).addEventListener (chrome://media-engagement/media-engagement.js:177:7)

I guess the sort key is not defined. That can be fixed in lines 80-85 in chrome://media-engagement/media-engagement.js by adding the key:

  if (sortKey == 'visits' || sortKey == 'mediaPlaybacks' ||
      sortKey == 'lastMediaPlaybackTime' || sortKey == 'totalScore' ||
      sortKey == 'audiblePlaybacks' || sortKey == 'significantPlaybacks' ||
      sortKey == 'highScoreChanges' || sortKey == "isHigh") {
    return val1 - val2;
  }