Remove encoding parameter from createMultiPartFormData() and createFormData()

Source/core/html/FormDataList.h

 /*
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 59 matching lines @@
     }
     void appendBlob(const String& key, PassRefPtrWillBeRawPtr<Blob> blob, const String& filename = String())
     {
         appendString(key);
         appendBlob(blob, filename);
     }
 
     const WillBeHeapVector<Item>& items() const { return m_items; }
     const WTF::TextEncoding& encoding() const { return m_encoding; }
 
-    PassRefPtr<FormData> createFormData(const WTF::TextEncoding&, FormData::EncodingType = FormData::FormURLEncoded);
-    PassRefPtr<FormData> createMultiPartFormData(const WTF::TextEncoding&);
+    PassRefPtr<FormData> createFormData(FormData::EncodingType = FormData::FormURLEncoded);
+    PassRefPtr<FormData> createMultiPartFormData();
 
     void trace(Visitor*);
 
 private:
     void appendKeyValuePairItemsTo(FormData*, const WTF::TextEncoding&, bool isMultiPartForm, FormData::EncodingType = FormData::FormURLEncoded);
 
     void appendString(const CString&);
     void appendString(const String&);
     void appendBlob(PassRefPtrWillBeRawPtr<Blob>, const String& filename);
 
     WTF::TextEncoding m_encoding;
     WillBeHeapVector<Item> m_items;
 };
 
 } // namespace WebCore
 
 WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(WebCore::FormDataList::Item);
 
 #endif // FormDataList_h