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

chrome/browser/history/top_sites.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/history/top_sites.h"
 
 #include <algorithm>
 #include <set>
 
 #include "base/logging.h"
@@ skipping 928 matching lines @@
 }
 
 void TopSites::RestartQueryForTopSitesTimer(base::TimeDelta delta) {
   if (timer_.IsRunning() && ((timer_start_time_ + timer_.GetCurrentDelay()) <
                              (base::TimeTicks::Now() + delta))) {
     return;
   }
 
   timer_start_time_ = base::TimeTicks::Now();
   timer_.Stop();
-  timer_.Start(FROM_HERE, delta, this, &TopSites::TimerFired);
+  timer_.Start(delta, this, &TopSites::TimerFired);
 }
 
 void TopSites::OnHistoryMigrationWrittenToDisk(TopSitesBackend::Handle handle) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   if (!profile_)
     return;
 
   HistoryService* history =
       profile_->GetHistoryService(Profile::EXPLICIT_ACCESS);
@@ skipping 46 matching lines @@
   SetTopSites(pages);
 
   // Used only in testing.
   NotificationService::current()->Notify(
       chrome::NOTIFICATION_TOP_SITES_UPDATED,
       Source<TopSites>(this),
       Details<CancelableRequestProvider::Handle>(&handle));
 }
 
 }  // namespace history