Sheriff: Disable HeavyAdInterventionEnabled_ErrorPageLoaded

Bug: 1109750
Change-Id: I2c2f95f427d41dfd98ec230dd4a89f0997635d3c
Tbr: apaseltiner@chromium.org, johnidel@chromium.org
No-Try: True
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2321399Reviewed-by: Adithya Srinivasan <adithyas@chromium.org>
Commit-Queue: Adithya Srinivasan <adithyas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791990}

chrome/browser/page_load_metrics/observers/ad_metrics/ads_page_load_metrics_observer_browsertest.cc

@@ -1678,8 +1678,9 @@ class NoHostThresholdHeavyAdsBrowserTest
 
 // Verifies that the frame is navigated to the intervention page when a
 // heavy ad intervention triggers.
+// TODO(crbug.com/1109750): Test flakes on all platforms.
 IN_PROC_BROWSER_TEST_F(NoHostThresholdHeavyAdsBrowserTest,
-                       HeavyAdInterventionEnabled_ErrorPageLoaded) {
+                       DISABLED_HeavyAdInterventionEnabled_ErrorPageLoaded) {
   base::HistogramTester histogram_tester;
   auto incomplete_resource_response =
       std::make_unique<net::test_server::ControllableHttpResponse>(