Add 8bit Content-Transfer-Encoding support for reading MHTML files

Source/core/loader/archive/MHTMLParser.cpp

 /*
  * Copyright (C) 2011 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 184 matching lines @@
     switch (mimeHeader.contentTransferEncoding()) {
     case MIMEHeader::Base64:
         if (!base64Decode(content->data(), content->size(), data)) {
             LOG_ERROR("Invalid base64 content for MHTML part.");
             return 0;
         }
         break;
     case MIMEHeader::QuotedPrintable:
         quotedPrintableDecode(content->data(), content->size(), data);
         break;
+    case MIMEHeader::EightBit:
     case MIMEHeader::SevenBit:
     case MIMEHeader::Binary:
         data.append(content->data(), content->size());
         break;
     default:
         LOG_ERROR("Invalid encoding for MHTML part.");
         return 0;
     }
     RefPtr<SharedBuffer> contentBuffer = SharedBuffer::adoptVector(data);
     // FIXME: the URL in the MIME header could be relative, we should resolve it if it is.
@@ skipping 17 matching lines @@
 {
     return m_resources.size();
 }
 
 ArchiveResource* MHTMLParser::subResourceAt(size_t index) const
 {
     return m_resources[index].get();
 }
 
 }