Remove Backslash-as-JPY hack

Source/core/dom/Document.h

Index: Source/core/dom/Document.h
diff --git a/Source/core/dom/Document.h b/Source/core/dom/Document.h
index 6035f99629b6c9d8cf457252e77023ba8585efa9..9da4fb47462532cd0b2b477501c325adc6452323 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -884,17 +884,6 @@ public:
     void setEncoding(const WTF::TextEncoding&);
     const WTF::TextEncoding& encoding() const { return m_encoding; }
 
-    String displayStringModifiedByEncoding(const String&) const;
-    PassRefPtr<StringImpl> displayStringModifiedByEncoding(PassRefPtr<StringImpl>) const;
-    void displayBufferModifiedByEncoding(LChar* buffer, unsigned len) const
-    {
-        displayBufferModifiedByEncodingInternal(buffer, len);
-    }
-    void displayBufferModifiedByEncoding(UChar* buffer, unsigned len) const
-    {
-        displayBufferModifiedByEncodingInternal(buffer, len);
-    }
-
     void setAnnotatedRegionsDirty(bool f) { m_annotatedRegionsDirty = f; }
     bool annotatedRegionsDirty() const { return m_annotatedRegionsDirty; }
     bool hasAnnotatedRegions () const { return m_hasAnnotatedRegions; }
@@ -1116,9 +1105,6 @@ private:
 
     static void didReceiveTask(void*);
 
-    template <typename CharacterType>
-    void displayBufferModifiedByEncodingInternal(CharacterType*, unsigned) const;
-
     PageVisibilityState visibilityState() const;
 
     PassRefPtr<HTMLCollection> ensureCachedCollection(CollectionType);