[Sheriff] Disable CrSettingsPrivacyPageV3Test.HappinessTrackingSurveysTests

This test is flaky on macOS and Windows.

TBR=dpapad@chromium.org

Bug: 1113912
Change-Id: I01da04ba3fdc85b77442debf35ffe9304000b5cd
No-Presubmit: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2340512Reviewed-by: Reilly Grant <reillyg@chromium.org>
Commit-Queue: Reilly Grant <reillyg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795712}

chrome/test/data/webui/settings/cr_settings_v3_browsertest.js

@@ -433,8 +433,10 @@ TEST_F(
       runMochaSuite('PrivacyPageSound');
     });
 
+// TODO(crbug.com/1113912): flaky failure on multiple platforms
 TEST_F(
-    'CrSettingsPrivacyPageV3Test', 'HappinessTrackingSurveysTests', function() {
+    'CrSettingsPrivacyPageV3Test', 'DISABLED_HappinessTrackingSurveysTests',
+    function() {
       runMochaSuite('HappinessTrackingSurveys');
     });