Revert of Revert "Moved text decoding to the parser thread"

Source/core/html/parser/BackgroundHTMLParser.h

Index: Source/core/html/parser/BackgroundHTMLParser.h
diff --git a/Source/core/html/parser/BackgroundHTMLParser.h b/Source/core/html/parser/BackgroundHTMLParser.h
index b9b5a511c49d5ef2ff926353764448aa7ffb06f4..f1a76fd000577676c9ef0ea5b580076ebfeb221d 100644
--- a/Source/core/html/parser/BackgroundHTMLParser.h
+++ b/Source/core/html/parser/BackgroundHTMLParser.h
@@ -31,8 +31,6 @@
 #include "core/html/parser/HTMLParserOptions.h"
 #include "core/html/parser/HTMLPreloadScanner.h"
 #include "core/html/parser/HTMLSourceTracker.h"
-#include "core/html/parser/HTMLToken.h"
-#include "core/html/parser/HTMLTokenizer.h"
 #include "core/html/parser/HTMLTreeBuilderSimulator.h"
 #include "core/html/parser/XSSAuditorDelegate.h"
 #include "wtf/PassOwnPtr.h"
@@ -41,6 +39,7 @@
 namespace WebCore {
 
 class HTMLDocumentParser;
+class SharedBuffer;
 class XSSAuditor;
 
 class BackgroundHTMLParser {
@@ -51,13 +50,10 @@ public:
         WeakPtr<HTMLDocumentParser> parser;
         OwnPtr<XSSAuditor> xssAuditor;
         OwnPtr<TokenPreloadScanner> preloadScanner;
+        OwnPtr<TextResourceDecoder> decoder;
     };
 
-    static void create(PassRefPtr<WeakReference<BackgroundHTMLParser> > reference, PassOwnPtr<Configuration> config)
-    {
-        new BackgroundHTMLParser(reference, config);
-        // Caller must free by calling stop().
-    }
+    static void start(PassRefPtr<WeakReference<BackgroundHTMLParser> >, PassOwnPtr<Configuration>);
 
     struct Checkpoint {
         WeakPtr<HTMLDocumentParser> parser;
@@ -69,7 +65,9 @@ public:
         String unparsedInput;
     };
 
-    void append(const String&);
+    void appendBytes(PassOwnPtr<Vector<char> >);
+    void setDecoder(PassOwnPtr<TextResourceDecoder>);
+    void flush();
     void resumeFrom(PassOwnPtr<Checkpoint>);
     void startedChunkWithCheckpoint(HTMLInputCheckpoint);
     void finish();
@@ -79,10 +77,13 @@ public:
 
 private:
     BackgroundHTMLParser(PassRefPtr<WeakReference<BackgroundHTMLParser> >, PassOwnPtr<Configuration>);
+    ~BackgroundHTMLParser();
 
+    void append(const String&);
     void markEndOfFile();
     void pumpTokenizer();
     void sendTokensToMainThread();
+    void updateDocument(const String& decodedData);
 
     WeakPtrFactory<BackgroundHTMLParser> m_weakFactory;
     BackgroundHTMLInputStream m_input;
@@ -99,6 +100,8 @@ private:
 
     OwnPtr<XSSAuditor> m_xssAuditor;
     OwnPtr<TokenPreloadScanner> m_preloadScanner;
+    OwnPtr<TextResourceDecoder> m_decoder;
+    DocumentEncodingData m_lastSeenEncodingData;
 };
 
 }