Call checkCompleted() synchronously in HTMLLinkElement::dispatchPendingEvent()

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2009 Rob Buis (rwlbuis@gmail.com)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 262 matching lines @@
   return linkStyle()->sheetLoaded();
 }
 
 void HTMLLinkElement::notifyLoadedSheetAndAllCriticalSubresources(
     LoadedSheetErrorStatus errorStatus) {
   DCHECK(linkStyle());
   linkStyle()->notifyLoadedSheetAndAllCriticalSubresources(errorStatus);
 }
 
 void HTMLLinkElement::dispatchPendingEvent(
-    std::unique_ptr<IncrementLoadEventDelayCount>) {
+    std::unique_ptr<IncrementLoadEventDelayCount> count) {
   DCHECK(m_link);
   if (m_link->hasLoaded())
     linkLoaded();
   else
     linkLoadingErrored();
+
+  // Checks Document's load event synchronously here for performance.
+  // This is safe because dispatchPendingEvent() is called asynchronously.
+  count->clearAndCheckLoadEvent();
 }
 
 void HTMLLinkElement::scheduleEvent() {
   TaskRunnerHelper::get(TaskType::DOMManipulation, &document())
       ->postTask(
           BLINK_FROM_HERE,
           WTF::bind(
               &HTMLLinkElement::dispatchPendingEvent, wrapPersistent(this),
               WTF::passed(IncrementLoadEventDelayCount::create(document()))));
 }
@@ skipping 62 matching lines @@
   LinkLoaderClient::trace(visitor);
   DOMTokenListObserver::trace(visitor);
 }
 
 DEFINE_TRACE_WRAPPERS(HTMLLinkElement) {
   visitor->traceWrappers(m_relList);
   HTMLElement::traceWrappers(visitor);
 }
 
 }  // namespace blink