Pause HTML parser for external stylesheets in the body

third_party/WebKit/Source/core/html/parser/HTMLTreeBuilderSimulator.cpp

 /*
  * Copyright (C) 2013 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 133 matching lines @@
       m_namespaceStack.push_back(HTML);
     if (!inForeignContent()) {
       // FIXME: This is just a copy of Tokenizer::updateStateFor which uses
       // threadSafeMatches.
       if (threadSafeMatch(tagName, textareaTag) ||
           threadSafeMatch(tagName, titleTag)) {
         tokenizer->setState(HTMLTokenizer::RCDATAState);
       } else if (threadSafeMatch(tagName, scriptTag)) {
         tokenizer->setState(HTMLTokenizer::ScriptDataState);
         simulatedToken = ScriptStart;
+      } else if (threadSafeMatch(tagName, linkTag)) {
+        simulatedToken = Link;
       } else if (!m_inSelectInsertionMode) {
         // If we're in the "in select" insertion mode, all of these tags are
         // ignored, so we shouldn't change the tokenizer state:
         // https://html.spec.whatwg.org/#parsing-main-inselect
         if (threadSafeMatch(tagName, plaintextTag) &&
             !m_inSelectInsertionMode) {
           tokenizer->setState(HTMLTokenizer::PLAINTEXTState);
         } else if (threadSafeMatch(tagName, styleTag) ||
                    threadSafeMatch(tagName, iframeTag) ||
                    threadSafeMatch(tagName, xmpTag) ||
@@ skipping 34 matching lines @@
          tokenExitsMath(token))) {
       m_namespaceStack.pop_back();
     }
     if (threadSafeMatch(tagName, scriptTag)) {
       if (!inForeignContent())
         tokenizer->setState(HTMLTokenizer::DataState);
       return ScriptEnd;
     } else if (threadSafeMatch(tagName, selectTag)) {
       m_inSelectInsertionMode = false;
     }
+    if (threadSafeMatch(tagName, styleTag))
+      simulatedToken = StyleEnd;
   }
 
   // FIXME: Also setForceNullCharacterReplacement when in text mode.
   tokenizer->setForceNullCharacterReplacement(inForeignContent());
   tokenizer->setShouldAllowCDATA(inForeignContent());
   return simulatedToken;
 }
 
 }  // namespace blink