[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

third_party/WebKit/Source/modules/encoding/TextEncoder.cpp

 /*
  * Copyright (C) 2013 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 40 matching lines @@
 }
 
 TextEncoder::~TextEncoder() {}
 
 String TextEncoder::encoding() const {
   String name = String(m_encoding.name()).lower();
   DCHECK_EQ(name, "utf-8");
   return name;
 }
 
-DOMUint8Array* TextEncoder::encode(const String& input) {
+NotShared<DOMUint8Array> TextEncoder::encode(const String& input) {
   CString result;
   if (input.is8Bit())
     result = m_codec->encode(input.characters8(), input.length(),
                              WTF::QuestionMarksForUnencodables);
   else
     result = m_codec->encode(input.characters16(), input.length(),
                              WTF::QuestionMarksForUnencodables);
 
   const char* buffer = result.data();
   const unsigned char* unsignedBuffer =
       reinterpret_cast<const unsigned char*>(buffer);
 
-  return DOMUint8Array::create(unsignedBuffer, result.length());
+  return NotShared<DOMUint8Array>(
+      DOMUint8Array::create(unsignedBuffer, result.length()));
 }
 
 }  // namespace blink