Implement requestIdleCallback API

Source/platform/WebScheduler.cpp

 // 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 "config.h"
 #include "public/platform/WebScheduler.h"
 
 #include "platform/Task.h"
 #include "public/platform/WebTraceLocation.h"
 #include "wtf/Assertions.h"
@@ skipping 41 matching lines @@
 void WebScheduler::postIdleTaskAfterWakeup(const WebTraceLocation& location, PassOwnPtr<IdleTask> idleTask)
 {
     postIdleTaskAfterWakeup(location, new IdleTaskRunner(idleTask));
 }
 
 void WebScheduler::postLoadingTask(const WebTraceLocation& location, PassOwnPtr<Task> task)
 {
     postLoadingTask(location, new blink::Task(task));
 }
 
+void WebScheduler::postTimerTask(const WebTraceLocation& location, PassOwnPtr<Task> task, long long delayMs)
+{
+    postTimerTask(location, new blink::Task(task), delayMs);
+}
+
 } // namespace blink