Deflake reporting-navigation.http.html by waiting more

Bug: 1091665
Change-Id: I5487cf88e0b5d60c3a421cce521428adc0822938
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2269403
Auto-Submit: Yutaka Hirano <yhirano@chromium.org>
Commit-Queue: Makoto Shimazu <shimazu@chromium.org>
Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#782909}

third_party/blink/web_tests/TestExpectations

@@ -6595,7 +6595,7 @@ crbug.com/1058888 [ Linux ] animations/animationworklet/peek-updated-composited-
 
 crbug.com/1015187 external/wpt/html/cross-origin-embedder-policy/none.https.html [ Pass Timeout ]
 crbug.com/1013523 external/wpt/html/cross-origin-embedder-policy/require-corp.https.html [ Failure Pass ]
-crbug.com/1091665 external/wpt/html/cross-origin-embedder-policy/reporting-navigation.https.html [ Pass Failure ]
+crbug.com/1091665 [ Debug ] external/wpt/html/cross-origin-embedder-policy/reporting-navigation.https.html [ Pass Failure ]
 
 # [virtual/...]external/wpt/web-animation test flakes
 crbug.com/1064065 virtual/threaded/external/wpt/css/css-animations/event-dispatch.tentative.html [ Pass Failure ]

third_party/blink/web_tests/external/wpt/html/cross-origin-embedder-policy/reporting-navigation.https.html

@@ -69,8 +69,8 @@ async function observeReports(global) {
   });
   observer.observe();
 
-  // Wait 3000ms for reports to settle.
-  await new Promise(r => step_timeout(r, 3000));
+  // Wait 5000ms for reports to settle.
+  await new Promise(r => step_timeout(r, 5000));
   return reports;
 }