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

chrome/browser/extensions/extension_updater.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/extensions/extension_updater.h"
 
 #include <algorithm>
 #include <set>
 
 #include "base/compiler_specific.h"
@@ skipping 924 matching lines @@
   double jitter_factor = (RandDouble() * .2) - 0.1;
   delay_ms += delay_ms * jitter_factor;
   TimeDelta actual_delay = TimeDelta::FromMilliseconds(
       static_cast<int64>(delay_ms));
 
   // Save the time of next check.
   Time next = Time::Now() + actual_delay;
   prefs_->SetInt64(kNextExtensionsUpdateCheck, next.ToInternalValue());
   prefs_->ScheduleSavePersistentPrefs();
 
-  timer_.Start(FROM_HERE, actual_delay, this, &ExtensionUpdater::TimerFired);
+  timer_.Start(actual_delay, this, &ExtensionUpdater::TimerFired);
 }
 
 void ExtensionUpdater::TimerFired() {
   DCHECK(alive_);
   CheckNow();
 
   // If the user has overridden the update frequency, don't bother reporting
   // this.
   if (frequency_seconds_ == ExtensionService::kDefaultUpdateFrequencySeconds) {
     Time last = Time::FromInternalValue(prefs_->GetInt64(
@@ skipping 286 matching lines @@
   std::set<std::string>::const_iterator i;
   for (i = ids.begin(); i != ids.end(); ++i)
     in_progress_ids_.insert(*i);
 }
 
 void ExtensionUpdater::RemoveFromInProgress(const std::set<std::string>& ids) {
   std::set<std::string>::const_iterator i;
   for (i = ids.begin(); i != ids.end(); ++i)
     in_progress_ids_.erase(*i);
 }