[content] Add support for Non nestable idle tasks the the RendererScheduler

content/renderer/scheduler/web_scheduler_impl.cc

 // Copyright 2014 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/renderer/scheduler/web_scheduler_impl.h"
 
 #include "base/bind.h"
 #include "base/single_thread_task_runner.h"
 #include "content/renderer/scheduler/renderer_scheduler.h"
 #include "third_party/WebKit/public/platform/WebTraceLocation.h"
@@ skipping 27 matching lines @@
                                     blink::WebScheduler::IdleTask* task) {
   DCHECK(idle_task_runner_);
   scoped_ptr<blink::WebScheduler::IdleTask> scoped_task(task);
   tracked_objects::Location location(web_location.functionName(),
                                      web_location.fileName(), -1, nullptr);
   idle_task_runner_->PostIdleTask(
       location,
       base::Bind(&WebSchedulerImpl::runIdleTask, base::Passed(&scoped_task)));
 }
 
+void WebSchedulerImpl::postNonNestableIdleTask(
+    const blink::WebTraceLocation& web_location,
+    blink::WebScheduler::IdleTask* task) {
+  DCHECK(idle_task_runner_);
+  scoped_ptr<blink::WebScheduler::IdleTask> scoped_task(task);
+  tracked_objects::Location location(web_location.functionName(),
+                                     web_location.fileName(), -1, nullptr);
+  idle_task_runner_->PostNonNestableIdleTask(
+      location,
+      base::Bind(&WebSchedulerImpl::runIdleTask, base::Passed(&scoped_task)));
+}
+
 void WebSchedulerImpl::postIdleTaskAfterWakeup(
     const blink::WebTraceLocation& web_location,
     blink::WebScheduler::IdleTask* task) {
   DCHECK(idle_task_runner_);
   scoped_ptr<blink::WebScheduler::IdleTask> scoped_task(task);
   tracked_objects::Location location(web_location.functionName(),
                                      web_location.fileName(), -1, nullptr);
   idle_task_runner_->PostIdleTaskAfterWakeup(
       location,
       base::Bind(&WebSchedulerImpl::runIdleTask, base::Passed(&scoped_task)));
@@ skipping 10 matching lines @@
       base::Bind(&WebSchedulerImpl::runTask, base::Passed(&scoped_task)));
 }
 
 void WebSchedulerImpl::shutdown() {
   idle_task_runner_ = nullptr;
   loading_task_runner_ = nullptr;
   return renderer_scheduler_->Shutdown();
 }
 
 }  // namespace content