Merge branch '218507-collect-web-performance-metrics-via-snowplow' into 'master'

Collect web performance metrics via Snowplow

See merge request gitlab-org/gitlab!44454

app/assets/javascripts/tracking.js

@@ -9,7 +9,7 @@ const DEFAULT_SNOWPLOW_OPTIONS = {
   respectDoNotTrack: true,
   forceSecureTracker: true,
   eventMethod: 'post',
-  contexts: { webPage: true },
+  contexts: { webPage: true, performanceTiming: true },
   formTracking: false,
   linkClickTracking: false,
 };

spec/frontend/tracking_spec.js

@@ -28,7 +28,7 @@ describe('Tracking', () => {
         respectDoNotTrack: true,
         forceSecureTracker: true,
         eventMethod: 'post',
-        contexts: { webPage: true },
+        contexts: { webPage: true, performanceTiming: true },
         formTracking: false,
         linkClickTracking: false,
       });