[upgrade_util] Also add an event for the success case

We don't think successful renames are visible in Slow Reports.
This event (its absence in reports) will prove it.

[email protected]

Bug: 1252004
Change-Id: Ie2657adb050e2fb320f43809997996e6eb44bbbf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3330585
Auto-Submit: Gabriel Charette <[email protected]>
Reviewed-by: Etienne Bergeron <[email protected]>
Commit-Queue: Etienne Bergeron <[email protected]>
Cr-Commit-Position: refs/heads/main@{#951112}
diff --git a/chrome/browser/first_run/upgrade_util_win.cc b/chrome/browser/first_run/upgrade_util_win.cc
index 6cef0a4f..0d0593f 100644
--- a/chrome/browser/first_run/upgrade_util_win.cc
+++ b/chrome/browser/first_run/upgrade_util_win.cc
@@ -111,6 +111,8 @@
     return false;
   }
 
+  TRACE_EVENT0("startup", "InvokeGoogleUpdateForRename RENAME_SUCCESSFUL");
+
   return true;
 #else   // BUILDFLAG(GOOGLE_CHROME_BRANDING)
   return false;