Trace more methods under HTMLDocumentParser::insert

Source/core/html/parser/HTMLPreloadScanner.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009 Torch Mobile, Inc. http://www.torchmobile.com/
  * 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.
@@ skipping 375 matching lines @@
 
 void HTMLPreloadScanner::appendToEnd(const SegmentedString& source)
 {
     m_source.append(source);
 }
 
 void HTMLPreloadScanner::scan(HTMLResourcePreloader* preloader, const KURL& startingBaseElementURL)
 {
     ASSERT(isMainThread()); // HTMLTokenizer::updateStateFor only works on the main thread.
 
+    TRACE_EVENT1("webkit", "HTMLPreloadScanner::scan", "source_length", m_source.length());
+
     // When we start scanning, our best prediction of the baseElementURL is the real one!
     if (!startingBaseElementURL.isEmpty())
         m_scanner.setPredictedBaseElementURL(startingBaseElementURL);
 
     PreloadRequestStream requests;
 
     while (m_tokenizer->nextToken(m_source, m_token)) {
         if (m_token.type() == HTMLToken::StartTag)
             m_tokenizer->updateStateFor(attemptStaticStringCreation(m_token.name(), Likely8Bit));
         m_scanner.scan(m_token, m_source, requests);
         m_token.clear();
     }
 
     preloader->takeAndPreload(requests);
 }
 
 }