Make Resource::resourceBuffer() to return PassRefPtr<const SharedBuffer>

third_party/WebKit/Source/platform/mhtml/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 181 matching lines @@
 static bool skipLinesUntilBoundaryFound(SharedBufferChunkReader& lineReader, const String& boundary)
 {
     String line;
     while (!(line = lineReader.nextChunkAsUTF8StringWithLatin1Fallback()).isNull()) {
         if (line == boundary)
             return true;
     }
     return false;
 }
 
-MHTMLParser::MHTMLParser(PassRefPtr<SharedBuffer> data)
+MHTMLParser::MHTMLParser(PassRefPtr<const SharedBuffer> data)
     : m_lineReader(std::move(data), "\r\n")
 {
 }
 
 HeapVector<Member<ArchiveResource>> MHTMLParser::parseArchive()
 {
     MIMEHeader* header = MIMEHeader::parseHeader(&m_lineReader);
     HeapVector<Member<ArchiveResource>> resources;
     if (!parseArchiveWithHeader(header, resources))
         resources.clear();
@@ skipping 154 matching lines @@
     if (!contentID.startsWith('<') || !contentID.endsWith('>'))
         return KURL();
 
     StringBuilder uriBuilder;
     uriBuilder.append("cid:");
     uriBuilder.append(contentID, 1, contentID.length() - 2);
     return KURL(KURL(), uriBuilder.toString());
 }
 
 } // namespace blink