message: docs(benchpress): reword a comment
  * this is a follow up on pr to change
  the wording of the comment explaining the fix.
  PR Close
diff: @@ -243,11 +243,12 @@ export class PerflogMetric extends Metric {
  // testing (this is triggered by us calling #timeBegin and #timeEnd).
  //
  // Previously, this was done by checking that the event name matched our mark name and that
  - // the phase was either "B" or "E" ("begin" or "end"). However, for some reason now this is
  + // the phase was either "B" or "E" ("begin" or "end"). However, since Chrome v90 this is
  // showing up as "-bpstart" and "-bpend" ("benchpress start/end"), which is what one would
  // actually expect since that is the mark name used in ChromeDriverExtension - see the
  - // #timeBegin and #timeEnd implementations in chrome_driver_extension.ts. We are not sure why
  - // the markName didn't show up with the "-bp(start/end)" suffix before.
  + // #timeBegin and #timeEnd implementations in chrome_driver_extension.ts. For
  + // backwards-compatibility with Chrome v89 (and older), we do both checks: the phase-based
  + // one ("B" or "E") and event name-based (the "-bp(start/end)" suffix).
  const isStartEvent = (ph === 'B' && name === markName) || name === markName + '-bpstart';
  const isEndEvent = (ph === 'E' && name === markName) || name === markName + '-bpend';
  if (isStartEvent) {
  