Moved text decoding to the parser thread

Source/core/dom/DecodedDataDocumentParser.cpp

Index: Source/core/dom/DecodedDataDocumentParser.cpp
diff --git a/Source/core/dom/DecodedDataDocumentParser.cpp b/Source/core/dom/DecodedDataDocumentParser.cpp
index 7f3c01f23d888588788284487ead384a0f4ef704..fb6ade991c253936de8b4732269082a40e08f758 100644
--- a/Source/core/dom/DecodedDataDocumentParser.cpp
+++ b/Source/core/dom/DecodedDataDocumentParser.cpp
@@ -35,6 +35,7 @@ namespace WebCore {
 DecodedDataDocumentParser::DecodedDataDocumentParser(Document* document)
     : DocumentParser(document)
     , m_hasAppendedData(false)
+    , m_needsDecoder(true)
 {
 }
 
@@ -44,6 +45,7 @@ DecodedDataDocumentParser::~DecodedDataDocumentParser()
 
 void DecodedDataDocumentParser::setDecoder(PassOwnPtr<TextResourceDecoder> decoder)
 {
+    m_needsDecoder = false;
     m_decoder = decoder;
 }
 
@@ -52,6 +54,11 @@ TextResourceDecoder* DecodedDataDocumentParser::decoder()
     return m_decoder.get();
 }
 
+PassOwnPtr<TextResourceDecoder> DecodedDataDocumentParser::takeDecoder()
+{
+    return m_decoder.release();
+}
+
 void DecodedDataDocumentParser::setHasAppendedData()
 {
     m_hasAppendedData = true;
@@ -91,11 +98,7 @@ void DecodedDataDocumentParser::flush()
 
 void DecodedDataDocumentParser::updateDocument(String& decodedData)
 {
-    DocumentEncodingData encodingData;
-    encodingData.encoding = m_decoder->encoding();
-    encodingData.wasDetectedHeuristically = m_decoder->encodingWasDetectedHeuristically();
-    encodingData.sawDecodingError = m_decoder->sawError();
-    document()->setEncodingData(encodingData);
+    document()->setEncodingData(DocumentEncodingData(*m_decoder.get()));
 
     if (decodedData.isEmpty())
         return;