Do not normalize into NFC the values of form fields

Source/web/WebPageSerializerImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 267 matching lines @@
     SerializeDomParam* param,
     FlushOption flushOption)
 {
     // Data buffer is not full nor do we want to force flush.
     if (flushOption != ForceFlush && m_dataBuffer.length() <= dataBufferCapacity)
         return;
 
     String content = m_dataBuffer.toString();
     m_dataBuffer.clear();
 
-    CString encodedContent = param->textEncoding.encode(content, WTF::EntitiesForUnencodables);
+    CString encodedContent = param->textEncoding.normalizeAndEncode(content, WTF::EntitiesForUnencodables);
 
     // Send result to the client.
     m_client->didSerializeDataForFrame(param->url,
                                        WebCString(encodedContent.data(), encodedContent.length()),
                                        status);
 }
 
 void WebPageSerializerImpl::openTagToString(Element* element,
                                             SerializeDomParam* param)
 {
@@ skipping 222 matching lines @@
 
         encodeAndFlushBuffer(WebPageSerializerClient::CurrentFrameIsFinished, &param, ForceFlush);
     }
 
     ASSERT(m_dataBuffer.isEmpty());
     m_client->didSerializeDataForFrame(KURL(), WebCString("", 0), WebPageSerializerClient::AllFramesAreFinished);
     return didSerialization;
 }
 
 }  // namespace WebKit