Tweaking WebPageSerializerImpl to emit a BOM for UTF16/32.

third_party/WebKit/Source/wtf/text/TextEncoding.h

 /*
  * Copyright (C) 2004, 2006, 2007, 2008, 2009 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 35 matching lines @@
     const TextEncoding& encodingForFormSubmission() const;
 
     String decode(const char* str, size_t length) const
     {
         bool ignored;
         return decode(str, length, false, ignored);
     }
     String decode(const char*, size_t length, bool stopOnError, bool& sawError) const;
 
     CString encode(const String&, UnencodableHandling) const;
+    CString encodeBOMifApplicable() const;
 
 private:
     bool isNonByteBasedEncoding() const;
     bool isUTF7Encoding() const;
 
     const char* m_name;
 };
 
 inline bool operator==(const TextEncoding& a, const TextEncoding& b) { return a.name() == b.name(); }
 inline bool operator!=(const TextEncoding& a, const TextEncoding& b) { return a.name() != b.name(); }
@@ skipping 12 matching lines @@
 using WTF::ASCIIEncoding;
 using WTF::Latin1Encoding;
 using WTF::UTF16BigEndianEncoding;
 using WTF::UTF16LittleEndianEncoding;
 using WTF::UTF32BigEndianEncoding;
 using WTF::UTF32LittleEndianEncoding;
 using WTF::UTF8Encoding;
 using WTF::WindowsLatin1Encoding;
 
 #endif // TextEncoding_h