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I am looking at fixing the remaining differences between the trace and devtools log network records used for Lantern (ctrl+f INTERNAL_LANTERN_USE_TRACE).

  • replace an older trace for a newer one in the metrics test - the older one is missing data needed in the trace for network stuff
  • document some reasons for why the other differences exist. Need fixes upstream in the trace processor

@connorjclark connorjclark requested a review from a team as a code owner May 19, 2025 18:52
@connorjclark connorjclark requested review from paulirish and removed request for a team May 19, 2025 18:52
@connorjclark connorjclark changed the title test: use newer trace in metrics test tests: use newer trace in metrics test May 19, 2025
@connorjclark connorjclark merged commit 54a1e1f into main May 20, 2025
26 of 28 checks passed
@connorjclark connorjclark deleted the lantern-up-tests-may19 branch May 20, 2025 19:14
copybara-service bot pushed a commit to ChromeDevTools/devtools-frontend that referenced this pull request May 20, 2025
Requests that never send a response are a thing that happens:

* Long-polling requests that never end
* The trace ended before the request did

We should not exclude these from the trace processor. This helps with
Lantern - see GoogleChrome/lighthouse#16492.

Additionally, I think this handler wanted to filter out data urls, but
it wasn't doing it directly so some got through. That should be fixed
now.

Bug: none
Change-Id: I911211512055667fa2deb125dd64389ce8968324
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6569818
Auto-Submit: Connor Clark <[email protected]>
Reviewed-by: Paul Irish <[email protected]>
Commit-Queue: Connor Clark <[email protected]>
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