Make WebTaskRunner ThreadSafeRefCounted

third_party/WebKit/Source/core/dom/ScriptRunner.cpp

 /*
  * Copyright (C) 2010 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 20 matching lines @@
 #include "core/dom/TaskRunnerHelper.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebScheduler.h"
 #include "public/platform/WebThread.h"
 
 namespace blink {
 
 ScriptRunner::ScriptRunner(Document* document)
     : m_document(document),
-      m_taskRunner(
-          TaskRunnerHelper::get(TaskType::Networking, document)->clone()),
+      m_taskRunner(TaskRunnerHelper::get(TaskType::Networking, document)),
       m_numberOfInOrderScriptsWithPendingNotification(0),
       m_isSuspended(false) {
   DCHECK(document);
 #ifndef NDEBUG
   m_hasEverBeenSuspended = false;
 #endif
 }
 
 void ScriptRunner::queueScriptForExecution(ScriptLoader* scriptLoader,
                                            AsyncExecutionType executionType) {
@@ skipping 190 matching lines @@
 
 DEFINE_TRACE(ScriptRunner) {
   visitor->trace(m_document);
   visitor->trace(m_pendingInOrderScripts);
   visitor->trace(m_pendingAsyncScripts);
   visitor->trace(m_asyncScriptsToExecuteSoon);
   visitor->trace(m_inOrderScriptsToExecuteSoon);
 }
 
 }  // namespace blink