Reland of Pass SequencedTaskRunner to PowerSaveBlocker for ui/file ops

content/browser/power_save_blocker_impl.cc

 // Copyright (c) 2013 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/power_save_blocker_impl.h"
+
 #include "build/build_config.h"
-#include "content/browser/power_save_blocker_impl.h"
 
 namespace content {
 
 PowerSaveBlocker::~PowerSaveBlocker() {}
 
 // static
-std::unique_ptr<PowerSaveBlocker> PowerSaveBlocker::Create(
-    PowerSaveBlockerType type,
-    Reason reason,
-    const std::string& description) {
-  return std::unique_ptr<PowerSaveBlocker>(
-      new PowerSaveBlockerImpl(type, reason, description));
+std::unique_ptr<PowerSaveBlocker> PowerSaveBlocker::CreateWithTaskRunners(
+    PowerSaveBlocker::PowerSaveBlockerType type,
+    PowerSaveBlocker::Reason reason,
+    const std::string& description,
+    scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
+    scoped_refptr<base::SingleThreadTaskRunner> blocking_task_runner) {
+  return std::unique_ptr<PowerSaveBlocker>(new PowerSaveBlockerImpl(
+      type, reason, description, ui_task_runner, blocking_task_runner));
 }
 
 }  // namespace content