EXPERIMENTAL, Trying Ross's suggestion

mojo/services/html_viewer/webscheduler_impl.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.
 
 // An implementation of WebThread in terms of base::MessageLoop and
 // base::Thread
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/tracked_objects.h"
@@ skipping 21 matching lines @@
 void WebSchedulerImpl::postLoadingTask(
     const blink::WebTraceLocation& web_location,
     blink::WebThread::Task* task) {
   scoped_ptr<blink::WebThread::Task> scoped_task(task);
   tracked_objects::Location location(web_location.functionName(),
                                      web_location.fileName(), -1, nullptr);
   task_runner_->PostTask(location, base::Bind(&WebSchedulerImpl::RunTask,
                                               base::Passed(&scoped_task)));
 }
 
+void WebSchedulerImp::postTimerTask(const WebTraceLocation& web_location,
+                                    blink::WebThread::Task* task,
+                                    long long delayMs) {
+  scoped_ptr<blink::WebThread::Task> scoped_task(task);
+  tracked_objects::Location location(web_location.functionName(),
+                                     web_location.fileName(), -1, nullptr);
+  task_runner_->PostDelayedTask(
+      location,
+      base::Bind(&WebSchedulerImpl::RunTask, base::Passed(&scoped_task)),
+      base::TimeDelta::FromMilliseconds(delayMs));
+}
+
 void WebSchedulerImpl::shutdown() {
   task_runner_ = nullptr;
 }
 
 // static
 void WebSchedulerImpl::RunIdleTask(
     scoped_ptr<blink::WebScheduler::IdleTask> task) {
   // TODO(davemoore) Implement idle scheduling.
   task->run(0);
 }
 
 // static
 void WebSchedulerImpl::RunTask(scoped_ptr<blink::WebThread::Task> task) {
   task->run();
 }
 
 }  // namespace html_viewer