Convert HTMLTrackElement timer to per-frame scheduler as Networking.

third_party/WebKit/Source/core/html/HTMLTrackElement.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
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  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 #include "core/html/HTMLTrackElement.h"
 
 #include "core/HTMLNames.h"
 #include "core/dom/Document.h"
+#include "core/dom/TaskRunnerHelper.h"
 #include "core/events/Event.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/html/CrossOriginAttribute.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/track/LoadableTextTrack.h"
 
 #define TRACK_LOG_LEVEL 3
 
 namespace blink {
 
 using namespace HTMLNames;
 
 static String urlForLoggingTrack(const KURL& url) {
   static const unsigned maximumURLLengthForLogging = 128;
 
   if (url.getString().length() < maximumURLLengthForLogging)
     return url.getString();
   return url.getString().substring(0, maximumURLLengthForLogging) + "...";
 }
 
 inline HTMLTrackElement::HTMLTrackElement(Document& document)
     : HTMLElement(trackTag, document),
-      m_loadTimer(this, &HTMLTrackElement::loadTimerFired) {
+      m_loadTimer(TaskRunnerHelper::get(TaskType::Networking, &document),
+                  this,
+                  &HTMLTrackElement::loadTimerFired) {
   DVLOG(TRACK_LOG_LEVEL) << "HTMLTrackElement - " << (void*)this;
 }
 
 DEFINE_NODE_FACTORY(HTMLTrackElement)
 
 HTMLTrackElement::~HTMLTrackElement() {}
 
 Node::InsertionNotificationRequest HTMLTrackElement::insertedInto(
     ContainerNode* insertionPoint) {
   DVLOG(TRACK_LOG_LEVEL) << "insertedInto";
@@ skipping 282 matching lines @@
   return nullptr;
 }
 
 DEFINE_TRACE(HTMLTrackElement) {
   visitor->trace(m_track);
   visitor->trace(m_loader);
   HTMLElement::trace(visitor);
 }
 
 }  // namespace blink