Convert ExternalPopupMenu Timer to TaskRunnerTimer.

third_party/WebKit/Source/web/ExternalPopupMenu.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 43 matching lines @@
 #include "wtf/PtrUtil.h"
 
 namespace blink {
 
 ExternalPopupMenu::ExternalPopupMenu(LocalFrame& frame,
                                      HTMLSelectElement& ownerElement,
                                      WebViewImpl& webView)
     : m_ownerElement(ownerElement),
       m_localFrame(frame),
       m_webView(webView),
-      m_dispatchEventTimer(this, &ExternalPopupMenu::dispatchEvent),
+      m_dispatchEventTimer(
+          TaskRunnerHelper::get(TaskType::UnspecedTimer, &frame),
+          this,
+          &ExternalPopupMenu::dispatchEvent),
       m_webExternalPopupMenu(0) {}
 
 ExternalPopupMenu::~ExternalPopupMenu() {}
 
 DEFINE_TRACE(ExternalPopupMenu) {
   visitor->trace(m_ownerElement);
   visitor->trace(m_localFrame);
   PopupMenu::trace(visitor);
 }
 
@@ skipping 226 matching lines @@
     if (ownerElement.itemIsDisplayNone(*items[i]))
       continue;
     if (popupMenuItemIndex == i)
       return indexTracker;
     ++indexTracker;
   }
   return -1;
 }
 
 }  // namespace blink