Revert of Moved text decoding to the parser thread

Source/core/dom/DocumentEncodingData.h

Index: Source/core/dom/DocumentEncodingData.h
diff --git a/Source/core/dom/DocumentEncodingData.h b/Source/core/dom/DocumentEncodingData.h
index 2016aa531ae3fa5f8a856381cca6509e7b1e5269..5a696afdd1757e42b42e6313b8919e6193f333b8 100644
--- a/Source/core/dom/DocumentEncodingData.h
+++ b/Source/core/dom/DocumentEncodingData.h
@@ -34,31 +34,19 @@
 #include "wtf/text/TextEncoding.h"
 
 namespace WebCore {
-class TextResourceDecoder;
 
-class DocumentEncodingData {
-public:
-    DocumentEncodingData();
-    explicit DocumentEncodingData(const TextResourceDecoder&);
+struct DocumentEncodingData {
+    DocumentEncodingData()
+        : wasDetectedHeuristically(false)
+        , sawDecodingError(false)
+    {
+    }
 
-    const WTF::TextEncoding& encoding() const { return m_encoding; }
-    void setEncoding(const WTF::TextEncoding&);
-    bool wasDetectedHeuristically() const { return m_wasDetectedHeuristically; }
-    bool sawDecodingError() const { return m_sawDecodingError; }
-
-private:
-    WTF::TextEncoding m_encoding;
-    bool m_wasDetectedHeuristically;
-    bool m_sawDecodingError;
+    WTF::TextEncoding encoding;
+    bool wasDetectedHeuristically;
+    bool sawDecodingError;
 };
 
-inline bool operator!=(const DocumentEncodingData& a, const DocumentEncodingData& b)
-{
-    return a.encoding() != b.encoding()
-        || a.wasDetectedHeuristically() != b.wasDetectedHeuristically()
-        || a.sawDecodingError() != b.sawDecodingError();
-}
-
 } // namespace WebCore
 
 #endif // DocumentEncodingData_h