Auto merge of #19523 - asajeffrey:test-perf-filter-out-failed-tests, r=avadacatavra

Filter out failed test-perf runs.

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Google Data Studio is a lot happier if the data that's driving it is already filtered. This PR filters out any failed test runs from the CSV file generated by test-perf.

---
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because this is test infrastructure

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etc/ci/performance/runner.py

@@ -281,10 +281,12 @@ def save_result_csv(results, filename, manifest, expected_runs, base):
         'unloadEventStart',
     ]
 
+    successes = [r for r in results if r['domComplete'] != -1]
+
     with open(filename, 'w', encoding='utf-8') as csvfile:
         writer = csv.DictWriter(csvfile, fieldnames)
         writer.writeheader()
-        writer.writerows(results)
+        writer.writerows(successes)
 
 
 def format_result_summary(results):