Update base/timer.h code to pass through Location from call sites.

net/proxy/init_proxy_resolver.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/init_proxy_resolver.h"
 
 #include "base/compiler_specific.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
 #include "base/string_util.h"
@@ skipping 147 matching lines @@
 }
 
 int InitProxyResolver::DoWait() {
   next_state_ = STATE_WAIT_COMPLETE;
 
   // If no waiting is required, continue on to the next state.
   if (wait_delay_.ToInternalValue() == 0)
     return OK;
 
   // Otherwise wait the specified amount of time.
-  wait_timer_.Start(wait_delay_, this, &InitProxyResolver::OnWaitTimerFired);
+  wait_timer_.Start(FROM_HERE, wait_delay_, this,
+                    &InitProxyResolver::OnWaitTimerFired);
   net_log_.BeginEvent(NetLog::TYPE_INIT_PROXY_RESOLVER_WAIT, NULL);
   return ERR_IO_PENDING;
 }
 
 int InitProxyResolver::DoWaitComplete(int result) {
   DCHECK_EQ(OK, result);
   if (wait_delay_.ToInternalValue() != 0) {
     net_log_.EndEventWithNetErrorCode(NetLog::TYPE_INIT_PROXY_RESOLVER_WAIT,
                                       result);
   }
@@ skipping 193 matching lines @@
   }
 
   // This is safe to call in any state.
   if (dhcp_proxy_script_fetcher_)
     dhcp_proxy_script_fetcher_->Cancel();
 
   DidCompleteInit();
 }
 
 }  // namespace net