tracing: get rid of files in TracingController interface

content/browser/browser_main_loop.cc

 // Copyright (c) 2012 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 "content/browser/browser_main_loop.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
-#include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/pending_task.h"
 #include "base/power_monitor/power_monitor.h"
 #include "base/power_monitor/power_monitor_device_source.h"
 #include "base/process/process_metrics.h"
 #include "base/run_loop.h"
@@ skipping 1169 matching lines @@
 
   startup_trace_timer_.Start(FROM_HERE,
                              base::TimeDelta::FromSeconds(delay_secs),
                              this,
                              &BrowserMainLoop::EndStartupTracing);
 }
 
 void BrowserMainLoop::EndStartupTracing() {
   is_tracing_startup_ = false;
   TracingController::GetInstance()->DisableRecording(
-      startup_trace_file_, base::Bind(&OnStoppedStartupTracing));
+      TracingController::CreateFileSink(
+          startup_trace_file_,
+          base::Bind(OnStoppedStartupTracing, startup_trace_file_)));
 }
 
 }  // namespace content