Revert "Currently, base/timer.cc calls PostTask with FROM_HERE as the Location,

chrome/browser/sync/notifier/registration_manager.cc

 // Copyright (c) 2011 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 "chrome/browser/sync/notifier/registration_manager.h"
 
 #include <algorithm>
 #include <cstddef>
 #include <string>
 
@@ skipping 174 matching lines @@
         (status->last_registration_request -
          status->last_registration_attempt) +
         status->next_delay;
     base::TimeDelta delay =
         (status->delay <= base::TimeDelta()) ?
         base::TimeDelta() : status->delay;
     VLOG(2) << "Registering "
             << syncable::ModelTypeToString(model_type) << " in "
             << delay.InMilliseconds() << " ms";
     status->registration_timer.Stop();
-    status->registration_timer.Start(FROM_HERE,
+    status->registration_timer.Start(
         delay, status, &RegistrationManager::RegistrationStatus::DoRegister);
     double next_delay_seconds =
         CalculateBackoff(static_cast<double>(status->next_delay.InSeconds()),
                          kInitialRegistrationDelaySeconds,
                          kMinRegistrationDelaySeconds,
                          kMaxRegistrationDelaySeconds,
                          kRegistrationDelayExponent,
                          GetJitter(),
                          kRegistrationDelayMaxJitter);
     status->next_delay =
@@ skipping 36 matching lines @@
 }
 
 bool RegistrationManager::IsTypeRegistered(
     syncable::ModelType model_type) const {
   DCHECK(non_thread_safe_.CalledOnValidThread());
   return registration_statuses_[model_type].state ==
       invalidation::InvalidationListener::REGISTERED;
 }
 
 }  // namespace sync_notifier