Moved setting of visual ordering from DocumentWriter to DecodedDataDocument

Source/core/dom/RawDataDocumentParser.h

Index: Source/core/dom/RawDataDocumentParser.h
diff --git a/Source/core/dom/RawDataDocumentParser.h b/Source/core/dom/RawDataDocumentParser.h
index 343842d9c247a3d8764161383bed0f581eb1183e..f2adeed32f8a8bdecd860fc458a0448e7850cccb 100644
--- a/Source/core/dom/RawDataDocumentParser.h
+++ b/Source/core/dom/RawDataDocumentParser.h
@@ -45,11 +45,10 @@ protected:
     }
 
 private:
-    virtual size_t flush() OVERRIDE
+    virtual void flush() OVERRIDE
     {
         // Make sure appendBytes is called at least once.
         appendBytes(0, 0);
-        return 0;
     }
 
     virtual void insert(const SegmentedString&)