Introduce TaskRunner::RunsTasksInCurrentSequence()

third_party/WebKit/Source/platform/scheduler/child/idle_helper.cc

 // Copyright 2015 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 "platform/scheduler/child/idle_helper.h"
 
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "platform/scheduler/base/real_time_domain.h"
@@ skipping 270 matching lines @@
 
 base::TimeTicks IdleHelper::CurrentIdleTaskDeadline() const {
   helper_->CheckOnValidThread();
   return state_.idle_period_deadline();
 }
 
 void IdleHelper::OnIdleTaskPosted() {
   TRACE_EVENT0(disabled_by_default_tracing_category_, "OnIdleTaskPosted");
   if (is_shutdown_)
     return;
-  if (idle_task_runner_->RunsTasksOnCurrentThread()) {
+  if (idle_task_runner_->RunsTasksInCurrentSequence()) {
     OnIdleTaskPostedOnMainThread();
   } else {
     helper_->ControlTaskRunner()->PostTask(
         FROM_HERE, on_idle_task_posted_closure_.GetCallback());
   }
 }
 
 void IdleHelper::OnIdleTaskPostedOnMainThread() {
   TRACE_EVENT0(disabled_by_default_tracing_category_,
                "OnIdleTaskPostedOnMainThread");
@@ skipping 201 matching lines @@
     case IdlePeriodState::IN_LONG_IDLE_PERIOD_PAUSED:
       return "in_long_idle_period_paused";
     default:
       NOTREACHED();
       return nullptr;
   }
 }
 
 }  // namespace scheduler
 }  // namespace blink