Adding instrumentation to locate the source of jankiness.

google_apis/gaia/gaia_auth_fetcher.cc

 // Copyright (c) 2012 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 "google_apis/gaia/gaia_auth_fetcher.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
+#include "base/profiler/scoped_profile.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "google_apis/gaia/gaia_auth_consumer.h"
 #include "google_apis/gaia/gaia_constants.h"
 #include "google_apis/gaia/gaia_urls.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 #include "net/base/escape.h"
 #include "net/base/load_flags.h"
@@ skipping 899 matching lines @@
     const net::URLRequestStatus& status,
     int response_code) {
   if (status.is_success() && response_code == net::HTTP_OK) {
     consumer_->OnGetCheckConnectionInfoSuccess(data);
   } else {
     consumer_->OnGetCheckConnectionInfoError(GenerateAuthError(data, status));
   }
 }
 
 void GaiaAuthFetcher::OnURLFetchComplete(const net::URLFetcher* source) {
+  // TODO(vadimt): Remove ScopedProfile below once crbug.com/422577 is fixed.
+  tracked_objects::ScopedProfile tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "422577 GaiaAuthFetcher::OnURLFetchComplete"));
+
   fetch_pending_ = false;
   // Some of the GAIA requests perform redirects, which results in the final
   // URL of the fetcher not being the original URL requested.  Therefore use
   // the original URL when determining which OnXXX function to call.
   const GURL& url = source->GetOriginalURL();
   const net::URLRequestStatus& status = source->GetStatus();
   int response_code = source->GetResponseCode();
   std::string data;
   source->GetResponseAsString(&data);
 #ifndef NDEBUG
@@ skipping 33 matching lines @@
     NOTREACHED();
   }
 }
 
 // static
 bool GaiaAuthFetcher::IsSecondFactorSuccess(
     const std::string& alleged_error) {
   return alleged_error.find(kSecondFactor) !=
       std::string::npos;
 }