Reland of Pass SequencedTaskRunner to PowerSaveBlocker for ui/file ops

content/browser/power_save_blocker_ozone.cc

Index: content/browser/power_save_blocker_ozone.cc
diff --git a/content/browser/power_save_blocker_ozone.cc b/content/browser/power_save_blocker_ozone.cc
index c3102351774d2f73f76b462ab39541a47ce7bb19..1618a857bc5263b6cb09b8c0c763ce637e3b7e78 100644
--- a/content/browser/power_save_blocker_ozone.cc
+++ b/content/browser/power_save_blocker_ozone.cc
@@ -25,11 +25,15 @@ class PowerSaveBlockerImpl::Delegate
   DISALLOW_COPY_AND_ASSIGN(Delegate);
 };
 
-PowerSaveBlockerImpl::PowerSaveBlockerImpl(PowerSaveBlockerType type,
-                                           Reason reason,
-                                           const std::string& description)
-    : delegate_(new Delegate()) {
-}
+PowerSaveBlockerImpl::PowerSaveBlockerImpl(
+    PowerSaveBlockerType type,
+    Reason reason,
+    const std::string& description,
+    scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
+    scoped_refptr<base::SingleThreadTaskRunner> blocking_task_runner)
+    : delegate_(new Delegate()),
+      ui_task_runner_(ui_task_runner),
+      blocking_task_runner_(blocking_task_runner) {}
 
 PowerSaveBlockerImpl::~PowerSaveBlockerImpl() { }