Adding instrumentation to locate the source of jankiness

components/signin/core/browser/signin_account_id_helper.cc

Index: components/signin/core/browser/signin_account_id_helper.cc
diff --git a/components/signin/core/browser/signin_account_id_helper.cc b/components/signin/core/browser/signin_account_id_helper.cc
index 57a69b21c8e3814dd1e43e8d8ae2a5fcd398e227..8570e11fcc31ec9f784f5726d2a6efef9c911e0b 100644
--- a/components/signin/core/browser/signin_account_id_helper.cc
+++ b/components/signin/core/browser/signin_account_id_helper.cc
@@ -5,6 +5,7 @@
 #include "components/signin/core/browser/signin_account_id_helper.h"
 
 #include "base/prefs/pref_service.h"
+#include "base/profiler/scoped_profile.h"
 #include "components/signin/core/browser/profile_oauth2_token_service.h"
 #include "components/signin/core/browser/signin_client.h"
 #include "components/signin/core/common/signin_pref_names.h"
@@ -136,6 +137,11 @@ void SigninAccountIdHelper::GoogleSignedOut(const std::string& account_id,
 
 void SigninAccountIdHelper::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 SigninAccountIdHelper::OnRefreshTokenAvailable"));
+
   if (account_id == signin_manager_->GetAuthenticatedAccountId()) {
     std::string current_gaia_id =
         client_->GetPrefs()->GetString(prefs::kGoogleServicesUserAccountId);