Adding instrumentation to locate the source of jankiness

google_apis/gaia/identity_provider.cc

Index: google_apis/gaia/identity_provider.cc
diff --git a/google_apis/gaia/identity_provider.cc b/google_apis/gaia/identity_provider.cc
index 842891e67f37d4f3600756806c9250abfcfb00b9..73abe2a8a5441652dc64346c710ae2578cf9bc88 100644
--- a/google_apis/gaia/identity_provider.cc
+++ b/google_apis/gaia/identity_provider.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/profiler/scoped_profile.h"
 #include "google_apis/gaia/identity_provider.h"
 
 IdentityProvider::Observer::~Observer() {}
@@ -39,6 +40,11 @@ void IdentityProvider::RemoveObserver(Observer* observer) {
 }
 
 void IdentityProvider::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 IdentityProvider::OnRefreshTokenAvailable"));
+
   if (account_id != GetActiveAccountId())
     return;
   FOR_EACH_OBSERVER(OAuth2TokenService::Observer,