Fix HTMLDocumentParser::stopBackgroundParser crash

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

Index: third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
diff --git a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
index 07f747367118d5231744ac8252c9c26bf526b0f6..ed5d3592f20c47ae3ecd43aa377039fe2f1c5f45 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
+++ b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
@@ -129,10 +129,15 @@ HTMLDocumentParser::HTMLDocumentParser(Document& document, ParserContentPolicy c
     , m_triedLoadingLinkHeaders(false)
 {
     ASSERT(shouldUseThreading() || (m_token && m_tokenizer));
+    ThreadState::current()->registerPreFinalizer(this);
 }
 
 HTMLDocumentParser::~HTMLDocumentParser()
 {
+}
+
+void HTMLDocumentParser::dispose()
+{
     // In Oilpan, HTMLDocumentParser can die together with Document, and
     // detach() is not called in this case.
     if (m_haveBackgroundParser)
@@ -721,6 +726,7 @@ void HTMLDocumentParser::startBackgroundParser()
     ASSERT(document());
     m_haveBackgroundParser = true;
 
+    // TODO(alexclarke): Remove WebFrameScheduler::setDocumentParsingInBackground when background parser goes away.
     if (document()->frame() && document()->frame()->frameScheduler())
         document()->frame()->frameScheduler()->setDocumentParsingInBackground(true);