Adding instrumentation to locate the source of jankiness

chrome/browser/policy/cloud/user_policy_signin_service.cc

Index: chrome/browser/policy/cloud/user_policy_signin_service.cc
diff --git a/chrome/browser/policy/cloud/user_policy_signin_service.cc b/chrome/browser/policy/cloud/user_policy_signin_service.cc
index e39ccc6cf5894cd5812f458dd0bf4ced26f1f239..a4c3812dcac459007b0d33151f256fb9e56dcd0e 100644
--- a/chrome/browser/policy/cloud/user_policy_signin_service.cc
+++ b/chrome/browser/policy/cloud/user_policy_signin_service.cc
@@ -7,6 +7,7 @@
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
+#include "base/profiler/scoped_profile.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/profiles/profile.h"
@@ -107,6 +108,11 @@ void UserPolicySigninService::CallPolicyRegistrationCallback(
 
 void UserPolicySigninService::OnRefreshTokenAvailable(
     const std::string& account_id) {
+  // TODO(vadimt): Remove ScopedProfile below once crbug.com/422460 is fixed.
+  tracked_objects::ScopedProfile tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "422460 UserPolicySigninService::OnRefreshTokenAvailable"));
+
   // If using a TestingProfile with no UserCloudPolicyManager, skip
   // initialization.
   if (!policy_manager()) {