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

net/proxy/dhcp_proxy_script_fetcher_win.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 "net/proxy/dhcp_proxy_script_fetcher_win.h"
 
 #include "base/metrics/histogram.h"
 #include "base/perftimer.h"
 #include "base/threading/worker_pool.h"
 #include "net/base/net_errors.h"
@@ skipping 151 matching lines @@
     }
     if (!did_finish || result != ERR_PAC_NOT_IN_DHCP) {
       break;
     }
   }
 
   // Once we have a single result, we set a maximum on how long to wait
   // for the rest of the results.
   if (state_ == STATE_NO_RESULTS) {
     state_ = STATE_SOME_RESULTS;
-    wait_timer_.Start(FROM_HERE,
+    wait_timer_.Start(
         base::TimeDelta::FromMilliseconds(ImplGetMaxWaitMs()),
         this, &DhcpProxyScriptFetcherWin::OnWaitTimer);
   }
 }
 
 void DhcpProxyScriptFetcherWin::OnWaitTimer() {
   DCHECK_EQ(state_, STATE_SOME_RESULTS);
 
   // These are intended to help us understand whether our timeout may
   // be too aggressive or not aggressive enough.
@@ skipping 190 matching lines @@
   owner_ = owner;
   origin_loop_ = base::MessageLoopProxy::current();
 }
 
 bool DhcpProxyScriptFetcherWin::WorkerThread::ImplGetCandidateAdapterNames(
     std::set<std::string>* adapter_names) {
   return DhcpProxyScriptFetcherWin::GetCandidateAdapterNames(adapter_names);
 }
 
 }  // namespace net