Notify the HTMLDocumentParser on document element available

third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.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 436 matching lines @@
             break;
         }
 
         m_textPosition = it->textPosition();
 
         constructTreeFromCompactHTMLToken(*it);
 
         if (isStopped())
             break;
 
-        pumpPreloadQueue();
-
         if (!m_triedLoadingLinkHeaders && document()->loader()) {
             String linkHeader = document()->loader()->response().httpHeaderField(HTTPNames::Link);
             if (!linkHeader.isEmpty()) {
                 ASSERT(chunk);
                 LinkLoader::loadLinksFromHeader(linkHeader, document()->loader()->response().url(),
                     document(), NetworkHintsInterfaceImpl(), LinkLoader::OnlyLoadResources, &(chunk->viewport));
                 m_triedLoadingLinkHeaders = true;
             }
         }
 
@@ skipping 579 matching lines @@
 
 void HTMLDocumentParser::setDecoder(PassOwnPtr<TextResourceDecoder> decoder)
 {
     ASSERT(decoder);
     DecodedDataDocumentParser::setDecoder(std::move(decoder));
 
     if (m_haveBackgroundParser)
         HTMLParserThread::shared()->postTask(threadSafeBind(&BackgroundHTMLParser::setDecoder, m_backgroundParser, passed(takeDecoder())));
 }
 
-void HTMLDocumentParser::pumpPreloadQueue()
+void HTMLDocumentParser::documentElementAvailable()
 {
-    if (!document()->documentElement())
-        return;
-
+    TRACE_EVENT0("blink,loader", "HTMLDocumentParser::documentElementAvailable");
+    DCHECK(document()->documentElement());
     for (const String& scriptSource : m_queuedDocumentWriteScripts) {
         evaluateAndPreloadScriptForDocumentWrite(scriptSource);
     }
 
     m_queuedDocumentWriteScripts.clear();
     if (!m_queuedPreloads.isEmpty())
         m_preloader->takeAndPreload(m_queuedPreloads);
 }
 
 PassOwnPtr<HTMLPreloadScanner> HTMLDocumentParser::createPreloadScanner()
@@ skipping 39 matching lines @@
         DEFINE_STATIC_LOCAL(CustomCountHistogram, successHistogram, ("PreloadScanner.DocumentWrite.ExecutionTime.Success", 1, 10000, 50));
         successHistogram.count(duration);
     } else {
         DEFINE_STATIC_LOCAL(CustomCountHistogram, failureHistogram, ("PreloadScanner.DocumentWrite.ExecutionTime.Failure", 1, 10000, 50));
         failureHistogram.count(duration);
     }
 
 }
 
 } // namespace blink