1 files changed, 27 insertions, 1 deletions
diff --git a/browser/components/aboutwelcome/actors/AboutWelcomeChild.sys.mjs b/browser/components/aboutwelcome/actors/AboutWelcomeChild.sys.mjs
index 24bf73c80a..7c61c13a92 100644
--- a/browser/components/aboutwelcome/actors/AboutWelcomeChild.sys.mjs
+++ b/browser/components/aboutwelcome/actors/AboutWelcomeChild.sys.mjs
@@ -20,6 +20,15 @@ ChromeUtils.defineLazyGetter(lazy, "log", () => {
   return new Logger("AboutWelcomeChild");
 });
 
+const DID_SEE_FINAL_SCREEN_PREF = "browser.aboutwelcome.didSeeFinalScreen";
+
+XPCOMUtils.defineLazyPreferenceGetter(
+  lazy,
+  "toolbarEntrypoint",
+  "browser.aboutwelcome.entrypoint",
+  ""
+);
+
 export class AboutWelcomeChild extends JSWindowActorChild {
   // Can be used to avoid accesses to the document/contentWindow after it's
   // destroyed, which may throw unhandled exceptions.
@@ -233,6 +242,9 @@ export class AboutWelcomeChild extends JSWindowActorChild {
    * @param {object} eventData
    */
   AWSendEventTelemetry(eventData) {
+    if (lazy.toolbarEntrypoint) {
+      eventData.event_context.entrypoint = lazy.toolbarEntrypoint;
+    }
     this.AWSendToParent("TELEMETRY_EVENT", {
       ...eventData,
       event_context: {
@@ -242,7 +254,7 @@ export class AboutWelcomeChild extends JSWindowActorChild {
   }
 
   /**
-   * Send message that can be handled by AboutWelcomeParent.jsm
+   * Send message that can be handled by AboutWelcomeParent.sys.mjs
    *
    * @param {string} type
    * @param {any=} data
@@ -256,10 +268,24 @@ export class AboutWelcomeChild extends JSWindowActorChild {
     return this.wrapPromise(this.sendQuery("AWPage:WAIT_FOR_MIGRATION_CLOSE"));
   }
 
+  setDidSeeFinalScreen() {
+    this.AWSendToParent("SPECIAL_ACTION", {
+      type: "SET_PREF",
+      data: {
+        pref: {
+          name: DID_SEE_FINAL_SCREEN_PREF,
+          value: true,
+        },
+      },
+    });
+  }
+
   AWFinish() {
     const shouldFocusNewtabUrlBar =
       lazy.NimbusFeatures.aboutwelcome.getVariable("newtabUrlBarFocus");
 
+    this.setDidSeeFinalScreen();
+
     this.contentWindow.location.href = "about:home";
     if (shouldFocusNewtabUrlBar) {
       this.AWSendToParent("SPECIAL_ACTION", {