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

chrome/browser/prerender/prerender_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/prerender/prerender_manager.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 162 matching lines @@
  public:
   explicit MostVisitedSites(Profile* profile) :
       profile_(profile) {
     // If TopSites is already loaded, we will want to use it right away.
     // Otherwise, wait for three seconds to avoid race conditions.
     // This is a hack to ensure unit tests don't fail.
     // See http://crbug.com/94654
     if (profile && profile->GetTopSitesWithoutCreating()) {
       Init();
     } else {
-      timer_.Start(FROM_HERE, base::TimeDelta::FromSeconds(3), this,
+      timer_.Start(base::TimeDelta::FromSeconds(3), this,
                    &prerender::PrerenderManager::MostVisitedSites::Init);
     }
   }
 
   void Init() {
     history::TopSites* top_sites = GetTopSites();
     if (top_sites) {
       registrar_.Add(this, chrome::NOTIFICATION_TOP_SITES_CHANGED,
                      Source<history::TopSites>(top_sites));
     }
@@ skipping 594 matching lines @@
   if (!config_.rate_limit_enabled)
     return true;
   return elapsed_time >
       base::TimeDelta::FromMilliseconds(kMinTimeBetweenPrerendersMs);
 }
 
 void PrerenderManager::StartSchedulingPeriodicCleanups() {
   DCHECK(CalledOnValidThread());
   if (repeating_timer_.IsRunning())
     return;
-  repeating_timer_.Start(FROM_HERE,
+  repeating_timer_.Start(
       base::TimeDelta::FromMilliseconds(kPeriodicCleanupIntervalMs),
       this,
       &PrerenderManager::PeriodicCleanup);
 }
 
 void PrerenderManager::MaybeStopSchedulingPeriodicCleanups() {
   if (!prerender_list_.empty())
     return;
 
   DCHECK(CalledOnValidThread());
@@ skipping 217 matching lines @@
   DeletePendingDeleteEntries();
 }
 
 void PrerenderManager::RecordFinalStatus(Origin origin,
                                          uint8 experiment_id,
                                          FinalStatus final_status) const {
   histograms_->RecordFinalStatus(origin, experiment_id, final_status);
 }
 
 }  // namespace prerender