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

webkit/quota/quota_temporary_storage_evictor.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 "webkit/quota/quota_temporary_storage_evictor.h"
 
 #include "base/metrics/histogram.h"
 #include "googleurl/src/gurl.h"
 #include "webkit/quota/quota_manager.h"
 
@@ skipping 110 matching lines @@
   // Reset stats for next round.
   round_statistics_ = EvictionRoundStatistics();
 }
 
 void QuotaTemporaryStorageEvictor::Start() {
   DCHECK(CalledOnValidThread());
   StartEvictionTimerWithDelay(0);
 
   if (histogram_timer_.IsRunning())
     return;
-  histogram_timer_.Start(FROM_HERE, kHistogramReportInterval, this,
+  histogram_timer_.Start(kHistogramReportInterval, this,
                          &QuotaTemporaryStorageEvictor::ReportPerHourHistogram);
 }
 
 void QuotaTemporaryStorageEvictor::StartEvictionTimerWithDelay(int delay_ms) {
   if (eviction_timer_.IsRunning())
     return;
-  eviction_timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(delay_ms),
-                        this, &QuotaTemporaryStorageEvictor::ConsiderEviction);
+  eviction_timer_.Start(base::TimeDelta::FromMilliseconds(delay_ms), this,
+                        &QuotaTemporaryStorageEvictor::ConsiderEviction);
 }
 
 void QuotaTemporaryStorageEvictor::ConsiderEviction() {
   OnEvictionRoundStarted();
 
   // Get usage and disk space, then continue.
   quota_eviction_handler_->GetUsageAndQuotaForEviction(callback_factory_.
       NewCallback(
           &QuotaTemporaryStorageEvictor::OnGotUsageAndQuotaForEviction));
 }
@@ skipping 88 matching lines @@
     ++statistics_.num_errors_on_evicting_origin;
     if (repeated_eviction_) {
       // Sleep for a while and retry again until we see too many errors.
       StartEvictionTimerWithDelay(interval_ms_);
     }
     OnEvictionRoundFinished();
   }
 }
 
 }  // namespace quota