Don't NFC-normalize strings during Blob/File construction

Source/platform/blob/BlobData.cpp

 /*
  * Copyright (C) 2010 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 108 matching lines @@
     m_items.append(BlobDataItem(dataHandle, offset, length));
 }
 
 void BlobData::appendFileSystemURL(const KURL& url, long long offset, long long length, double expectedModificationTime)
 {
     m_items.append(BlobDataItem(url, offset, length, expectedModificationTime));
 }
 
 void BlobData::appendText(const String& text, bool doNormalizeLineEndingsToNative)
 {
-    CString utf8Text = UTF8Encoding().normalizeAndEncode(text, WTF::EntitiesForUnencodables);
+    CString utf8Text = UTF8Encoding().encode(text, WTF::EntitiesForUnencodables);
     RefPtr<RawData> data = nullptr;
     Vector<char>* buffer;
     if (canConsolidateData(text.length())) {
         buffer = m_items.last().data->mutableData();
     } else {
         data = RawData::create();
         buffer = data->mutableData();
     }
 
     if (doNormalizeLineEndingsToNative) {
@@ skipping 79 matching lines @@
 {
     BlobRegistry::addBlobDataRef(m_uuid);
 }
 
 BlobDataHandle::~BlobDataHandle()
 {
     BlobRegistry::removeBlobDataRef(m_uuid);
 }
 
 } // namespace blink