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

chrome/browser/internal_auth.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/internal_auth.h"
 
 #include <algorithm>
 #include <deque>
 
 #include "base/base64.h"
@@ skipping 325 matching lines @@
 
 class InternalAuthGenerationService : public base::ThreadChecker {
  public:
   InternalAuthGenerationService() : key_regeneration_tick_(0) {
     GenerateNewKey();
   }
 
   void GenerateNewKey() {
     DCHECK(CalledOnValidThread());
     if (!timer_.IsRunning()) {
-      timer_.Start(FROM_HERE,
+      timer_.Start(
           base::TimeDelta::FromMicroseconds(
               kKeyRegenerationSoftTicks * kTickUs),
           this,
           &InternalAuthGenerationService::GenerateNewKey);
     }
 
     scoped_ptr<crypto::HMAC> new_engine(
         new crypto::HMAC(crypto::HMAC::SHA256));
     std::string key = base::RandBytesAsString(kKeySizeInBytes);
     if (!new_engine->Init(key))
@@ skipping 120 matching lines @@
   return g_generation_service.Get().GeneratePassport(domain, var_value_map, 0);
 }
 
 // static
 void InternalAuthGeneration::GenerateNewKey() {
   g_generation_service.Get().GenerateNewKey();
 }
 
 }  // namespace browser