Adding instrumentation to locate the source of jankiness

google_apis/gaia/identity_provider.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // 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() {}
 
 IdentityProvider::~IdentityProvider() {}
 
 void IdentityProvider::AddActiveAccountRefreshTokenObserver(
     OAuth2TokenService::Observer* observer) {
   OAuth2TokenService* token_service = GetTokenService();
   if (!token_service || token_service_observers_.HasObserver(observer))
@@ skipping 17 matching lines @@
 
 void IdentityProvider::AddObserver(Observer* observer) {
   observers_.AddObserver(observer);
 }
 
 void IdentityProvider::RemoveObserver(Observer* observer) {
   observers_.RemoveObserver(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,
                     token_service_observers_,
                     OnRefreshTokenAvailable(account_id));
 }
 
 void IdentityProvider::OnRefreshTokenRevoked(const std::string& account_id) {
   if (account_id != GetActiveAccountId())
     return;
@@ skipping 10 matching lines @@
 
 IdentityProvider::IdentityProvider() : token_service_observer_count_(0) {}
 
 void IdentityProvider::FireOnActiveAccountLogin() {
   FOR_EACH_OBSERVER(Observer, observers_, OnActiveAccountLogin());
 }
 
 void IdentityProvider::FireOnActiveAccountLogout() {
   FOR_EACH_OBSERVER(Observer, observers_, OnActiveAccountLogout());
 }